I've read in article here that there is a direct connection between how active you are on Sparkpeople and how successfull you will be. (Not sure what article it was.)
Since the more active you are on Sparkpeople--the more successful you will be...Become active! Get involved in teams, add friends, post on forum and message boards, post blogs, track your food and fitness, read success stories and articles.
If you want to be successful, be active!