With the rise of GPS-enabled smartphones, developers are eager to integrate location-based functionality into whatever they can. So it's no surprise when MessageParty, a Y Combinator company that's launching this week, says that it's looking to tie location with chat rooms to let you communicate with the people around you in real-time. You can download the company's iPhone app right here . The app is very straightforward. Open it, and you'll see a list of chat rooms that have been created within 1000 feet of you. Once you hop into a room, it's a pretty standard chat channel. It's safe to say that the application is still in a very early form — you can't direct message users yet, and if your GPS signal goes out then you can't chat, either.