This was a good read! I have to admit, Facebook groups are vastly underutilized. Sharing video content to them is worth your while. Blab.im is a great place to interview someone or a couple of people from a company or for a topic, record it and share it on YouTube. I have another one for you, use surveymonkey to do a survey of your customers or clients, turn it into an infographic, these share very well. Then turn the infographic into a Slideshare, there again great inbound lead gen, especially for B2B sector.