5. Untapped

Caters To: Beer Lovers

This unusual network available on iOS and android is like FourSquare but for those who love the golden nectar. Designed especially for beer lovers it lets users check in to a pub and also update what beer they are drinking.

The website lets users create a circle of friends and has all the quintessential trademarks of social networks such as posting photos and commenting on them. Untapped also has a blog which talks about beer events happening all over the world.

They recently organized an interesting photo contest and the results were more than amusing. This service is perfect for all you men sporting your beer bellies proudly.