Signed up for BlogExplosion last night and so far it seems to be working quite well! I heard about it a week or two ago, and we mentioned it in one of Blogosphere News episodes. Basically, you visit other people’s blogs and in return you get lots of traffic to your own blog.
I am not sure how much of the traffic is quality traffic, because it’s pretty easy to just cycle through the blogs without actually looking at them. Anyway, if you want some extra traffic, give it a shot. Sign up here!