Top 5 Social Networks

5. Twitter - Often overwhelming and noisy.

4. Facebook - Now mostly a login tool for other networks.

3. Pinterest - Hopefully guys get into this. Leans a little too feminine, but interesting UI.

2. Posterous - Very easy for long form.

1. Path - Beautiful UI and integration with the big dogs. Best mobile device platform. Just needs more people on it. If my best friends were on it, it would be all I use.