You can do cool cool things with data. You just have to have it and slice it.

Foursquare was the laugh of many jokes. Remember? "Check in"? Are you serious? Well, actually, they were. They have heaps of data and they know how to slice it. Look out. 

Check out the data they have on Trump-Branded business across the last two years. Foot traffic fell 14% YOY. Dang. Link