Geolocation is one of a number of features in the new Facebook Home app, which essentially enables Facebook to dominate the home screen of a user's smartphone. Retailers also will benefit from the rich data collected about all of a user's mobile interactions with other retailers and web sites. In addition, while Facebook has not added promotional capabilities to this app yet, observers expect it will eventually accommodate ads and sponsored posts. "This app has a lot of innovation on the social side in terms of social loyalty and geosensing, which is a pretty powerful thing for retailers t...