Originally posted at the CMB Research Blog Recently I have been playing around with Foursquare , the geo-targeting based social media application that allows me to "check in" at certain locations, share my "check in" with friends via Twitter and Facebook, and earn "badges" based on how much I use it. I'll be honest, as a consumer I don't fully get it (yet). But as a marketer in 2010 I want to understand where things are going and be able to speak to them as they relate to our clients. And with this week's eMarketer report that 53% of mobile app users are willing to share their locations, there is no question that there is a huge opportunity for brands to utilize this technology. Certainly geo-targeting is not for everyone, but some major brands are going beyond mobile ads and jumping in to help increase the impact of their loyalty programs and reward their best customers in real-time. And as many companies seek to evolve their loyalty progr...