Twitter isn't the only option for travelers looking to connect online. A number of other sites promise deals, advice or just a chance to connect with like-minded vacationers. But not every site works for every traveler; one that caters to the backpacker crowd, for instance, might not be the best place to fish for five-star hotel recommendations.
Number of users: 400 million active
Best for: Deals
Comment: Features 200 travel apps for everyone from cruisers to couchsurfers. Many travel companies also have their own pages, where they post photos, news and deals. Of course, because Facebook is one of the few such sites in our survey that allows companies as members, surfers should expect plenty of self-promotion.
Number of users: 1 million registered
Best for: Questions
Comment: One of the oldest travel sites, its forums include posts on travel to all 7 continents, covering everything from best Arctic coats to Shanghai spas. Features a "Travel Guide" section that groups members and reviews by destination. Members also organize regular offline meet-ups for travelers looking to connect in the real world.
Number of users: 1.6 million registered
Best for: Finding travel companions
Comment: Helps users find people with matching travel plans; say, someone to share the driving on a European road trip. Members can also create and comment on trip blogs, complete with photos and maps. One caveat for "seasoned" travelers: older members are definitely a minority on this youth-magnet site.
Number of users: 15 million registered
Best for: Complaints
Comment: Though better known for its (sometimes controversial) traveler reviews, the site does allow travelers to connect via forums and private messaging system. People with detailed questions on a certain locale can also contact certain uber-active members who the site has dubbed "destination experts."