It takes a little time to get used to, but if you stick with it, you'll "get it" and it will be worthwhile.

thanks! Any advice where to look for people - I'm interested in social media and green topics?

Social Media folks are all over the place. Hell, if you just look at my friends and fans, you'll see many people from SM circles,

Great

One way to find folks is to just go through the freinds and fans of other people- that is one of the things I have done.

I've done the same. Maybe someone will create similar list as for Twitter www.twellow.com/