They are all the rage at the minute and can be useful for traffic as well as networking, I have previously picked out just 50 of them before. I also have a couple myself Blogsrecord is a social blog directory, Stemble is a stumble and review exchange site and gottoread is a site I just set up that will be used for creating traffic to your blog through interaction and becoming popular. I used joomla and dolphin to create my sites but did you know you can do it for free using just your blog with a few plugins and tweaks.

Over the next few days I will show you how you can change wordpress into a social network for free, using a bit of tweaking and a few plugins. Its going to be a quick series as once I started to write this post I realised it was going to be a long one so I have split it up. Read more at MattNutts