Finally, a social application worth looking into: Dropp untethers you from the website-as social-destination concept. This little app does something neat: lets you leave messages in real-world places, wherever you go, for others to find. You can leave your messages for everyone, or for specific people, and when their iPhones, also running Dropp, come near, they’ll get an an alert. You can leave behind little messages, pictures, prizes for a surprise contest, treasure hunt clues, the possibilities are pretty cool to consider.
The app is brand new, and as such still feels kinda 1.0, but I would expect updates and additional functions to happen rapidly. It’s free for the iPhone from the App Store.