Snapchat is paying four square. That sentence in the article could be clearer, is confusing.
http://www.adweek.com/digital/snapchat-signs-data-deal-fours...
Thus, they sell a service and receive money and data from the users of those applications. I read other articles before telling how the information in their maps and APIs are impressive and the fact that you could use for free, if you are a small company, is a great deal. But, they are still not as valuable as they were before and they greatly depend on large companies. It makes me think that they are a great target to be acquired before becoming a unicorn.
It is quite clear that snap will bet heavily on AR and location. They have launched Spectacles and now a new way to discover content using location options. How long will they pay Foursquare to profit from their own data? Why do they not build a proprietary location technology or acquire another company that has?