By now, we're all used to targeted ads. Whether you're getting daily Groupons in your inbox or if you're one of the 600 million who regularly browse Facebook, you've seen a targeted ad. Until now, these advertisers have been aggregating your data, grouping you and targeting ads to you based on these groupings. Facebook has been testing a new service that alters the method by which ads are chosen. Traditional targeted ads are based on aggregated data. Facebook has begun serving ads to a small subset of their users based on real-time data mining.