I've had excellent results with WW Online... 110 pounds down. I've ended up gaining back about 30, but that's not a problem with WW. There was a medical issue that cropped up that forced me off the plan for a bit, followed by a new asthma inhaler that made me gain about half a pound a week until I finally gave up on it. Thankfully, I'm losing again.

But yeah, it's very possible to do just the Online version and have good success. Although I must admit that I did have an online support group of sorts... some friends I already knew, who had an LJ community for discussing WW stuff. It meant if I did have any questions or things I couldn't figure out, I could pick the brains of people who actually were going to meetings.