The more you check in the more you will see others who are consistently checking in on the message boards, blogs, challenges and teams. If you find someone who seems to share an interest (check out Spark Teams) then add them as a friend and leave a message on their Spark Page.
Many people are inactive but many, many more take the time to check in consistently.
If you don't love your body now, you won't love it after you reach your goal!!!