I will tell you that I am pretty much against WW. I don't think it teaches people to eat properly, it keeps you tethered to the plan making you depend on POINTS, and IMO encourages people to use a lot of food substitutes to get in as much food as possible for the amount of points you are given. I'm not saying that it doesn't work, it just goes against a lot of what I believe in learning to eat healthfully. But, it does work and if that suits you then use it.
Had to comment about this - WW DOES teach you to eat healthy. If you really follow the plan, it is not just points, but also a certain number of points coming from fruits and vegetables, lean proteins, whole grains, fats, etc. I mean, you can eat 25 points worth of Little Debbies, but who do you think you are fooling by doing that? And IF you do that, then you are not
really following the plan. As far as the processed foods go, they are not intended to be mainstays of the plan, but rather occasional treats or "tools" for when you cannot find other means of nutrition.
And WW DOES encourage exercising. If you exercise, you earn a few extra points worth of food. When I was on WW, I used those extra points for a high-protein snack after workouts.
To me, since I really only use the Net at work, SP was not so great. I have no motivation to track stuff online. I learned some basics from WW (drinking lots of water, eating fresh food instead of processed garbage) and now my best "check" is my DH. We both talk each other down from the ledge when we are considering overeating or indulging in too much of something that is not good for us.