Chatroulette.com is a hugely popular free site that lets you video chat anonymously with random people from around the globe. Founded by 17 year-old Russian student Andrey Ternovskiy in late 2009, it currently gets more than 1.5 million visitors a DAY, according to Der Spiegel.
I love the idea of being able to meet new people from around the world. But, given that this is the Internet and chatroulette.com is anonymous, you can imagine where things go from there! I could go into more detail, but Jon Stewart does a much better job than I ever could in the video below. The video is safe for work (barely)...