I'm excited to see where this goes. I was recently on a team for the Salesforce Hackathon that created a pretty cool rewards and consumer statistics platform. Earn points for visiting, get a push notification when you receive a reward, etc. Awesome for the consumer. The business owner gets statistics based on foot traffic, peak hours, most visited beacons, etc.

We didn't have any iBeacons handy (only 5 days between idea and completion), so we were using an iPad to broadcast an "iBeacon". It was pretty neat. I'd like to get my hands on some of Estimotes beacons.