Social media has become one of the world’s fastest growing industries. With Facebook and Twitter taking off in recent years, others have flooded the market trying to get a piece of the profits made by these websites. One of the newer social media sites is App.net, which is similar to Twitter. Today, App.net launched a new iPhone app called Passport. The app is used to manage accounts on the social network, however it is not used to access the main home of App.net, but rather just to find other accounts. If you use App.net, be sure to check out the new app by going to the App Store.