i find social network interesting and enjoyable. the way others interact on what activity you have. the more you make it interesting the more traffic will you get from it. such as twitter, my space and other social networks,. but making interesting things is not easy.. like in other
forum. the newbies have to gain some reputation first before they can create signatures and paste links into their post.
the only tips i can suggest here is upload some videos to your account, link some interesting blogs, fun interactive activity and etc...