Hey, I'm also often left scratching my head at the whole social web/ 2.0 thing, but since I started blogging for the first time about a year ago I've tried to get with it a little bit. MyBlogLog seems to be very popular, and a lot of blogs have a panel that shows which other MyBlogLog users are seeing this site live. Other places I'd recommend are Digg, Reddit, Flickr and Stumbleupon.