Crash course in web 2.0

Don't know your Facebook from your Bebo? Too scared to blog? And what is a wiki anyway?

Social media is affecting the way we do everything online, and even shaping our offline activities too. There's a lot to get your head around, but if you can explain what you're trying to achieve, I'll pick out the parts that are relevant and make them simple for you. I can also help with advice on free and cheap collaboration tools, good sites to look at, and the wider theory of how and why the internet became "social".