Earnings took a tumble in 2008, since weight loss programs are the first thing to go when economic hardship sets in. But they bounced right back, because Weight Watchers offers something most other diet programs don’t: Weekly meetings with a community of people who provide encouragement and support, like Alcoholics Anonymous for overeaters. You pay to attend and get weighed on a weekly basis, and once you attain your weight goal, you don’t have to pay again unless you gain it back.
And that’s where Weight Watchers is taking a hit. The next generation of diet programs, like the FitBit and MyFitnessPal.com, have a social aspect built into them–you can build a community around your weight loss project without ever having to go to a meeting."
Internet killed the dieting star: Why Weight Watchers is floundering.