I've been a lifetime member at Weight Watchers for a few months now. I follow the core program. I imagine there are other lifers floating around. If you're one, add a post.
Me!!! (although not currently in good standing... )
You'll find lots of Weight Watchers, from beginners to lifetimers on maintenance, right here on our W.I.S.H. (We're Inspired to Stay Healthy) forum- you should check it out!