It would be interesting to find out how other coupon sites with similar business models are fairing--as much as the land grab theory makes sense, I actually wonder about the current system of offering stuff I normally wouldn't want for cheap being a viable business.

A little off topic but I've been noticing a lot of "TeamBuy" ads on TV (I live in Canada)--one can't help but think that until competition like that is settled there will continue to be tremendous growing pains for Groupon and company.