10 things I learned making the fastest site in the world
This post is about performance techniques, so I hope you won’t mind that the site in question is not quite finished.
Edit: it’s finished!
Maybe I missed something, but isn’t your article’s title 100% false?
Only 6% of the top 10,000 sites hit the Facebook CDN, so it’s 16% of their code that is from Facebook (if all of those hit the Facebook CDN to get the SDK, rather than, say, a 2 KB like button image).