There are about a million Tweets a day with the word "I Want," and now there is a mobile photo sharing app that can capture all those things people want and share them with the world. The iPhone app is called Want! , the site is Want.it , and the concept is simple: you take a picture of things you want, give it a description, and share it with friends. The app can broadcast your wants to Facebook, Twitter, Foursquare and Tumblr. It pulls in locations from Facebook and tags from your description. "We want it to be a tool for quickly window shopping the world," says co_founder and CEO Gene DeRose , who gives me a demo in the video above. You can take pictures of anything you desire: a beautiful watch, a shirt your friend is wearing, a plate of ribs, a nap, a day at the beach. It's a mobile "like" button. "Like is kind of meh," says DeRose, "it is kind of meta and that is great. But want is more actionable. It has a possible end in commerce."