I was looking through my old layouts to see if I forgot to put anything on my current blog. Lo and behold (yeah, I know kind of an overused phrase), I found BlogExplosion. BlogExplosion is a site that allows you to surf other sites for credits. In return, you can use the credits for advertising your own site.
When I first joined in 2005, BlogExplosion users could either acquire points through surfing or through referrals. Now, there are games and it has become a bit more of an interactive site. It is a great way to try to get more traffic for your site, and you could potentially meet more people.
I still had a lot of credits, so I thought I would give it a try. I sometimes lose things when transitioning from one theme to another and never thought much. However, as I do recall, I did receive some good traffic through the site.