Been there, seen that? Then snap a picture and post it on Trover, a photo-sharing site that brims with images from your fellow avid travelers. Plug in any destination on the planet — Kansas, Kenya, Kathmandu — and up pop shots of local food and famous landmarks, must-try hot spots and treasured hideaways. Part gallery, part guidebook, Trover introduces others to your memorable adventures while helping you discover what you want to visit next. Free