What the f**k is social media?

I came across this today, it's a slide show that answers the question above. It was written by Marta Kagan, self-described social media evengelist and is an update of a presentation she made a year ago. It's nicely done and though aimed directly at business contains a lot of useful information about the exponential growth of social media. I particularly like the fact that if Facebook were a country it'd be the 8th most populous in the world and the idea that social media is like word of mouth on steroids. I will definitely be stealing that one. It's also good in that it reiterates the fact that I've mentioned elsewhere that using social media is about so much more than just one-way push marketing.