Augemented reality was one of the most overused buzzwords of the year, but for the most part, the applications we saw weren't really augmenting reality. Instead, like Layar and others, they take a phone's camera picture, GPS coordinates and compass heading and provide users with an overlay of nearby sights and shops. For some apps - especially stargazing apps like Star Walk - this is fine, but for most use cases, it's not really useful. Another type of augmented reality (AR) app that's hot right now uses paper markers and replaces them with 3D animation on your phone's screen - even Hallmark is getting in this business now, but it's more of a gimmick than a useful application of AR. The real promise of AR reaches far beyond this, however.