I heard about this site from the Jason Ellis radio show. I just signed up today. You can log your workouts and follow other members, kinda like twitter. Posting workouts and following friends can help keep you motivated. It's free to sign up. They also have daily workout videos and challenges.
If you join, follow me. I'm signed up as Mike_Everland (they don't allow spaces in your username so I used the underscore). I think it would be fun to follow each other's workout progress.