Most of all - it has a "photos taken nearby" feature, which I find very useful. The other thing is specific navigation - you swipe through the menu and it dynamically updates contents above. The only downside is lack of uploading photos, but I'd rather store my DSLR content on Flickr anyway. Take a look at one of the early versions here: https://www.youtube.com/watch?v=UO9wmmq1bz4