There's a huge difference between an exercise bike and the real thing. Sure you can add online gameplay, but it is a poor substitute.

I'm not sure how much staying power they have. More people seem to like the idea of excerise rather than the exercise itself. Maybe I'm missing something..

I'm surprised that they haven't expanded into rowing, seems like an even better fit. Personally, I think you're better off joining a gym and going to spin class if you don't have good roads near you.

Oh, and seeing that they have packages with bundled cycling shoes did make me cringe. That's when you need to go to a bike shop and get some that fit (cycling shoes are designed to be stiff so they don't 'wear in' to the same degree as other footwear.