While I always welcome the opportunity to earn more points, I just checked it out and it seems like it's more hassle than it's worth. Unfortunately, the interface isn't the same as the Opentable one... I don't see a way to just put in a city, time and party size and have it show all available times... instead you seem to have to put in a city first, browse the restaurant list (or search for a specific restaurant name), and then click through to check availability.