I’m a big fan of apps that let you share what you’re watching with all your social networks. Miso and GetGlue are the two that I use on a regular basis to let all my Twitter followers know when I’m watching the latest episode of Mad Men or the newest release at my local theater. Now, a newcomer has entered my social platforming orbit.

The service is called ScreenTribe and while it’s similar to the previous apps I mentioned, it also sets itself apart from the crowd in many ways.

Aside from allowing you to let everyone know what you’re watching, ScreenTribe also lets you compete with other users and earn physical prizes in the process. “Tuning in” to content earns players points that can be redeemed for real life rewards like gift cards, movie tickets, and non-profit charity donations. Users are also rewarded with badges when they complete special tasks like tuning in for the first time or watching a certain number of movies from one era.

Another feature that makes ScreenTribe unique is that it verifies the channels and shows people are tuning in to so there are no cheaters. If it’s a movie, the location of the theater is matched with show times at that specific location. Netflix accounts can be linked to verify live streaming media or DVDs sent by mail. This enables accurate representation of what people are tuning in to and how they are doing it.

This week was the first chance I’ve gotten to use the service and I’m enjoying it immensely. If you’re interested in joining my tribe, search for me by name, “Justin Vactor.” I’d love to see what’s on your screen.

Screentribe is available now as a free download for the iPhone, iPad, iPod Touch, Android devices, and the Web.