TravBuddy is a social-networking site that caters to people looking for travel partners. After you create a profile, you can post the details for any trips you have planned to see if others will be there at the same time. I recently met up with a group of TravBuddy friends in New York City—most of us had never met in person before, but we got along great and hung out every day. People also use TravBuddy to blog about trips, swap advice, and review hotels. Latifa Ahmad, Charleston, W.Va.