There are a LOT more data brokers than listed here, though it's a decent list to start with. These are small fry in the scheme of things though. You can start w

There are a LOT more data brokers than listed here, though it's a decent list to start with. These are small fry in the scheme of things though. You can start working your way through this one if you're really concerned: http://www.worldprivacyforum.org/2013/12/data-brokers-opt-out/ http://www.worldprivacyforum.org/2013/12/data-brokers-opt-ou...