I just joined. Spark People got annoying pretty quickly, but I was making some progress with it. I decided to try My Fitness Pal, and I need all the support I can get!
At my physical last week, my doctor and I were discussing weight loss and she gave me a few leads within the Fairview system. Unfortunately, none of them are covered by my health plan and I don't have hundreds or thousands of dollars lying around to invest in something I still think I can do without all the fuss. Seeing a nutritionist is covered, so I might do that in conjunction with getting started tracking food and activity.
If you are already on MFP, or want to join up, my user name is: yupknope