At the TechCrunch Disrupt conference this week, Trippy made its debut. This startup lets your friends help you plan your trip. Trippy ties into your social networks to see if your friends are familiar with the location of your trip. It does this by looking at their profiles to see if they live, work, go to school or have checked in there. The service combines one-click recommendations and Facebook style comments to let your friends suggest places to visit on your trip. That way, you can easily build an itinerary.