DailyMile
DailyMile is social workout-sharing site geared toward currently active people who want to give and get encouragement from the community.
Users can add workouts manually--with photos and videos--or upload workouts from devices. Workouts will automatically be mapped. DailyMile integrates with Garmin devices, Nike+, iPhone and Android. DailyMile syncs easily with Twitter and Facebook. Signup is free.
Users can easily see others workouts and post encouragement, similar to commenting on friends' posts on Facebook.