I agree! Whole heatedly! I've had my fitbit since Jan and have a pretty large group of friends on it. We have a work health program that is giving them away when you sign up for a "fitness coaching" thing. It has caught on like crazy, we now have a group for everyone at work and people are constantly trying to get in the lead. Doing laps around the production floor at break, laps around the block if its nice. Going to the bathroom on the other side of the building and downstairs to get more steps in!
When I'm at the gym, I will stay on the treadmill or elliptical until I'm ahead of certain people on my friends list
Nothing like a little friendly competition to get your butt in gear.