I have to hang my head in shame this week and admit that I have joined facebook . I love Facebook, I made contact with friends I haven't seen in years and facebook really makes it easy... I am not a big fan of social netowork applications but Facebook is great. It has a clean interface, its easy to use and I have found loads of my friends already. While using Facebook I started wondering: What makes a great social network? Share this post: email it! | bookmark it! | digg it! | reddit! | kick...