I'm also a Lose It! user. I've lost 11 pounds in 2 months of using the Lose It! website and app. I like the ease of logging food and exercise, if it wasn't easy and fast, I wouldn't keep using it. I like the "badges" and social aspect. I purchased a Nike+ Fuel Band 3 weeks ago and the integration is easy, I earn extra calories when I earn more than 2500 fuel a day.
These two tools are motivating for me. My assumptions about my eating and activity are being challenged or just plain wrong, these tools are supporting me and motivating.