Google is probably doing the same thing with AdWords. Google has every bit of information about Groupon and LivingSocial AdWords spending (millions of dollars

Google is probably doing the same thing with AdWords. Google has every bit of information about Groupon and LivingSocial AdWords spending (millions of dollars per month). When Google launches their competitor, Google Offers, they'll know exactly which ads get people to buy deals. Incidentally, Google Offers will work by running offers across Google ad networks.