We've been fans of Instagram for a while, so we were keen to see what would happen when its developers opened Instagram's API to others. While there have been a few toe-in-the-water experiments, the first really interesting idea we've seen is Postagram. The service allows you to turn any Instagram image into a 300 dpi postcard for just US$0.99, posted to anywhere in the world. It'll be delivered within 2-5 days in the USA and will take a bit longer to get elsewhere. Sounds like a bargain.
Download the app now and give it a try if you already have Instagram installed. Postagram has a special launch offer that gives you your first postcard for free. Perfect for sending real postcards to your parents and anyone who isn't quite up there with you on the cutting edge of e-postcard delivery this summer.