It was only a matter of time before the addictive convenience of YouTube extended to that other thing we love best about the internet. Now, less than a year after it was founded, YouPorn-where users can upload their own amateur sex videos-is a categorical slam dunk, with almost 15,000 free videos available right now (and most of them much longer-and better-than the 30-second free clips your friends find elsewhere). Boasting the highest traffic of any adult site on the internet, YouPorn is clear proof that not all things are best left to the pros.