How very cool. Trevi brings together features from applications such as iPhoto, Foursquare and Instagram. Trevi creates a photo map for you. It also logs miles traveled, cities visited and -- down to the precise location on a map -- locations where a photo was taken. So, zero in on Midtown Manhattan and you see a pin for everywhere you snapped a photo. It's a simple app, but it's a nice way to catalog your travels. It takes seconds to load the app, even if you already have a huge photo library. This list is hardly comprehensive. I do not intend it to be. Feel free to leave ideas, additions, suggestions in the comments section of this article below and/or at my Twitter account. Follow @rocco_thestreet --Written by Rocco Pendola in Santa Monica, Calif.