Singapore-based start up Roam7, started by engineers Cheehan Tee and Toby Rahilly, compiles information from the travel photo albums of your Facebook friends.
When your friends share their vacation photos on Facebook, the program tags their location information and captions (about the hotels where they stayed and transportation) and pulls it into a travel guide. Roam7 also has a handy app so you can access all the info on the go.
Check it out at the Roam7 website.