Where do you live? Doesn't sound like New York, LA, or Toronto, the three largest cities in North America (excluding Mexico City). Anyway, I've used Open Table in all those cities and restaurants are packed. But don't take someone on a message board's word - check out restaurant stocks. It seems you've missed they've gone up along with profits. It also seems that you've missed the fact that Open Table gives points to users, so even if the restaurant was dead, there's an incentive to use the Open Table application, beyond the convenience of not having to phone for reservations, see who is busy, find new restaurants, or wait around.