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(Note: This post originally appeared on the HubSpot Marketing Blog on 6/17/2015)

How We Tripled Our Leads Using This Rarely-Discussed Blogging Tactic

By: Pamela Vaughan

Mar 2, 2016 · 16 min read

Nine months ago, I analyzed a report that would transform not only my role on the HubSpot blogging team, but also the whole blog’s editorial strategy. The results have been nothing short of eye-opening. And I’m not just talking about the findings from the report — I’m also talking about the business results we’ve generated from the shift we made in our blogging strategy because of those findings.

That shift is an ongoing internal project we call “historical optimization.” The goal? Update old blog content and generate more traffic and leads from it in the process.

Great for us, right? Hang on — it’s great for you, too. I’m writing about all this because any experienced blogger who’s tasked with growing and scaling the results they generate from their blog needs to know about it. The thing is, no one is really talking about it … yet.

As a result of HubSpot’s ongoing historical optimization, we’ve been able to generate way more value from content we’ve published in the past. As a matter of fact …

So I’m going to tell you the story of the historical optimization project, explain what we’ve done to achieve those results, and touch on how you can do it, too. And for even more in-depth information about how to do historical optimization yourself, we’ve created a whole ebook on the subject. Download it here for free.

What Is Historical Optimization?

Simply put, historical optimization means optimizing your “old” blog content so it’s fresh, up-to-date, and has the ability to generate even more traffic and conversions than it already does. By “old,” I just mean posts that already exist on your blog — whether you wrote them last month or three years ago.

If you’re not sure whether it really has a place in your blogging strategy, let me tell you the story about how our focus on historical optimization came to be and why we realized it was so important.

I had just returned to work from my three-month maternity leave, and I learned that the product team had just released a new tool within the HubSpot Marketing Platform called Attribution Reports.

Attribution Reports enabled us to better determine how many new leads each of our individual blog posts directly generated. And since I’m responsible for the optimization and growth of HubSpot’s core blogs, I started analyzing our Attribution Reports as soon as I could, hoping to discover some actionable nuggets of wisdom my team could use in one way or another.

Discoveries From the Attribution Report Analysis

My Attribution Report analysis was an attempt to determine which of our blog posts were the most influential in generating leads — which posts got the most visitors to click on a call-to-action within the post and convert on the landing page it directed them to. In other words, use last touch attribution to figure out exactly which posts directly resulted in lead generation.

When I came out from the other side of that analysis, this is what I’d discovered:

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So essentially, if the whole blogging team went on vacation for a month, we’d still generate 76% of the traffic and 92% of the leads we would’ve otherwise generated by also publishing new content. That may sound like an oversimplification, but still … nuts, right?

Here’s another crazy tidbit I learned:

46% of our monthly blog leads came from just 30 individual blog posts.

I’ll let that sink in a little.

Now what if I also told you we publish about 200 new posts every month, and at that time, we had accumulated nearly 6,000 total posts on our blog?

Here’s some perspective. The pie chart on the left shows the distribution of monthly leads we were generating, and the pie chart on the right shows the distribution of posts we had on our blog.

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This seems pretty crazy, right?

Our Light Bulb Moment: Optimizing the Past

What’s funny is, this shouldn’t have been as surprising as it was. In fact, it’s exactly what you’d expect to happen as an inbound marketer. Getting recurring, lasting value from old content is one of the main benefits of blogging. And the traffic sources for our top lead-generating posts supported it — these were all posts that were generating a lot of traffic from organic search month after month after month.

Once the sticker shock of all these findings wore off, we had to decide what to do with this newfound data and information. While we knew we couldn’t just stop creating new content (after all, “new” eventually becomes “old”), it was clear we needed to make a change in our blogging strategy.

We came to two conclusions that have become the core components of the historical optimization project:

1) Figure out how to get more leads from our high-traffic but low-converting blog posts (AKA Historical Blog Conversion Optimization).

Being able to identify which posts were our top lead generators meant we could also identify which posts were our worst lead generators. Coupled with traffic data, we were able to determine which posts were generating a lot of traffic but had low conversion rates — and potentially generate a lot more leads from content we already have by improving those conversion rates.

2) Figure out how to get more traffic to our high-converting posts (AKA Historical Blog Search Engine Optimization).

On the flip side, we also knew there were posts that converted well but weren’t getting a lot of traffic month after month. If we could search engine optimize those high-converting posts, we could potentially get them to rank better and generate more traffic that we already know would convert well.

In other words, we should stop focusing only on brand new content, and try to get more traffic and leads out of the content we already have — we should optimize the past.

And with that, the historical optimization project was born.

Why Historical Optimization Is More Important Now Than Ever Before

These days, we have a content overload problem. Just take a look at the graph below, which shows the number of new blog posts published on the WordPress blogging platform each month since October 2006. 58 million in May! And that’s just on WordPress — it doesn’t even take into consideration the posts published on other blogging platforms like HubSpot’s.

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As more and more businesses have started buying into the importance of content marketing, more and more businesses are creating content. And as the supply increases, so does the competition for getting that content found online.

According to Paul Hewerdine of B2B marketing agency Earnest (via Forrester’s 2014 report on building the case for content marketing), the problem is that “the supply of content is growing, but demand is static.” In other words, the people on the receiving end of all this content are only going to consume so much. Their demand isn’t growing with the supply.

The result, according to that same Forrester report, is that an estimated 50% of content from enterprises is going completely unused. So for marketers who have been blogging consistently for a while and are being tasked with growing and scaling their blogs, the answer can’t just be to increase content production proportionally to the growth goals they need to achieve.

This is why historical optimization becomes so important. Not only is it a way to get more out of the content you already have; but it’s also a way to get a leg up on such a competitive content landscape. And last, but certainly not least, it’s a way to deliver even more value to the people reading your content. After all, if people are going to continue finding your older content through search engines, don’t you want it to be fresh and up-to-date?

Okay … so how did we achieve those results I mentioned at the top of this article?

Historical Blog Conversion Optimization

We tackled the conversion optimization piece of the project first (figuring out how to get more leads from our high-traffic posts by improving their view-to-lead conversion rates). While we’d done some conversion optimization of old content in the past, without the Attribution Report, we had no way of knowing whether the changes we were making directly improved their conversion rates. Now we did!

The Playbook: Keyword-Based Conversion Rate Optimization

The very first thing we tried was conversion rate optimization based on offer relevancy — in other words, pairing the most relevant offer we had with the subject matter of the post. This is exactly how we approach call-to-action (CTA) selection for brand new posts, but the idea was that as we’ve expanded our library of marketing offers over the years, we may now have a more relevant and/or better performing offer than we did when we first published the blog post.

The results of this approach were hit or miss: Sometimes we’d improve the conversion rate, sometimes it’d stay about the same, and in some cases, the conversion rate would actually decrease. The reason was that this approach was purely a guessing game — it was based on assumptions about what the blog post’s visitors were looking for.

What we needed was an approach based on data, not assumptions. So then we thought, what if we focus on the specific keywords people were using to find these posts? Knowing that the primary referral source of traffic to these posts was search engines like Google, we figured we could much more accurately understand and satisfy the needs of our blog visitors by matching the offer we promoted in the post with the keywords people were using to find it.

In other words, get inside searchers’ heads and give the people what they really want.

So we tried it on one of our highest-traffic posts, which ranked highly for the keywords “how to write a press release” and “press release template.”


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Using this keyword-based conversion optimization methodology, we increased the conversion rate of the post by 240%. In other words, this post generates 3X more leads now than it did before we conversion optimized it. Then we tried it on 12 more of our top-trafficked posts, and we doubled the number of leads we generated from them.

In fact, of the 75 posts we’ve conversion optimized using this method, we’ve increased the conversion rate on every single one.

So how did we do it?

How to Conversion Optimize Old Blog Posts Based on Keywords

I’m going to provide a brief explanation of how to execute keyword-based conversion optimization, but if you’re looking for a more in-depth explanation, download our free ebook about historical optimization here. It explains each of the steps outlined below in much greater detail, and also provides a visual example of exactly what we do to posts we conversion optimize in this way.

Historical Blog Search Engine Optimization

The next part of the historical optimization project we tackled was search engine optimization. If you remember, the goal of historical search engine optimization is to improve the search rankings for posts that already convert well but aren’t getting a lot of traffic from search. More traffic to these high-converting posts could result in more leads.

Someone once said (honestly, no one can figure out who to give credit to), “The best place to hide a dead body is page two of Google.” If you’re not sure what I mean by that, take a look at the following chart from a 2014 study conducted by Advanced Web Ranking, which shows the clickthrough rates of specific organic search ranking positions in Google:

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This chart shows that on average, results on page one of Google get 71% of the clicks. Results on pages two and three, on the other hand, only get about 6%. Furthermore, the first five positions on page one of Google get 68% of all clicks.

In other words, if you want to benefit from the lion’s share of search traffic for a given keyword, you need to be on page one — and you need to be near the top. So how do you get your blog posts to the top of page one?

The Playbook: Updating and Republishing Old Blog Posts

Since inbound links is still one of the most important ranking factors, our first thought was to use guest blogging as a way to generate more inbound links to the content we wanted to rank better. But considering how difficult that approach would be to scale, we decided to look more closely at the internal assets we had more control over instead.

Over the years, we’d dabbled in updating and republishing old content that had gotten stale and outdated. We targeted posts we knew still generated a lot of organic search traffic month after month, and the goal was primarily to keep this high-traffic content fresh and up-to-date for our search visitors.

Knowing that one of Google’s ranking factors rewards freshness, I had a hunch one of the reasons these posts continued to do well was because we kept them updated. So I looked at our analytics to investigate. Sure enough, my hunch seemed to have some truth to it.

This graph shows how one particular blog post’s rank has changed over time for the keyword “how to use linkedin.” The date highlighted (3/26/2014) shows that this post ranked in the 19th position (i.e. the bottom of page 2) right before we updated it on 3/31/2014. If you look at the graph, it’s pretty clear what happened after that.

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To me, this looked really promising. What if all we had to do to improve the keyword rankings of our blog posts was update and republish them as new? This would be a much more scalable solution for us for a number of reasons:

Not only that — it also makes for a better user experience for our organic search visitors. Instead of coming across content in search that is stale and outdated, they’d find fresh, up-to-date, and more valuable content. Now that’s what I like to call a win-win.

So we decided to try it with a few posts.

Again, jackpot.

The chart below shows a sampling of six blog posts we’ve updated and republished. We used views generated from organic search as our primary KPI, because if the keyword ranking(s) for these posts improved as a result of the update, it would manifest as an increase in organic search views.

The “before” bars are a representation of the monthly views the posts generated from organic search before the updates, and the “after” bars represent the monthly views the posts generated from organic search after the updates. It’s worth noting that we also waited a period of 30 days in between the “before” and “after” time frames to give Google some time to improve the ranking of the post based on the update.

In every instance, we improved the number of monthly views these posts generated from organic search. And using HubSpot, for each of these posts, we can also dig into the individual keywords they’re ranking for and see how these rankings have improved as a result of the post update.

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Based on this initial success, post updates are now a regular part of our blogging editorial strategy. We’ve incorporated about 2–3 post updates per week since we started scaling this project, and as we pointed out earlier, we’ve increased the number of monthly organic search views to posts we update and republish by an average of 106%.

And considering we also run the keyword-based conversion optimization playbook on all the posts we update and republish, we’ve also tripled the number of monthly leads we’ve generated from posts we’ve updated and republished.

Why Updating and Republishing Old Blog Content Leads to Better Search Rankings

If you’re curious why this approach works so well, here are a few reasons:

Want to take advantage of this approach for yourself? Here’s how to do it.

How to Update and Republish Old Blog Posts

While I’ll briefly outline how to update and republish old blog content below, if you’re looking for a more in-depth explanation, you should download our free ebook about historical optimization here.

Who Should Do Historical Optimization?

Here’s the thing: Historical optimization isn’t a tactic meant for newer blogs that have only been around for a year or two. It’s a tactic best-suited for a blog that’s been around for several years, has already tried all the basic blog growth tactics, and is looking for brand new ways to grow. Here’s why:

Don’t Sacrifice Creating New Blog Content for Updating Old Content

Before I wrap this up, one final word of caution ….

Historical optimization should be a piece of your overall blogging strategy — not the whole strategy.

You can’t completely give up on creating new blog posts in an attempt to optimize the past. Remember, the old content you’re optimizing now was once brand new, and not every new post will turn into an SEO success story. So if you completely forgo new content marketing, you could be shooting your future self in the foot by giving yourself fewer chances to rank for new keywords. You could also miss out on capitalizing on new topics/trends emerging in your industry, as well as opportunities for thought leadership, among other benefits of new content.

That said, only you can decide what the right editorial balance is between updating old content and creating brand new content. As a starting point, audit your old content to determine how many post update opportunities you have. A blog that’s been around for several years and has a large repository of content likely has more opportunities than a blog that’s only been around for a couple of years.

Keep in mind that historical optimization is an ongoing project — if it proves successful for you, it should become a permanent tactic in your blogging strategy like it’s become for us. To help you track your historical optimization results, we’ve also included a free tracking template with the download of our historical optimization ebook. Get them both here.

If you’re already adopting a historical optimization approach, share your experiences in the responses section below!

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