Launched a couple of weeks ago, Muxtape lets you create an online mixtape. Nothing fancy, just upload songs and send the URL to friends. Everyone using Tumblr, the similarly simple blog platform, went crazy for Muxtapes for about 36 hours, and since then the service has been criminally underhyped. Example tapes: Fucking Rad for hard rockers, Catbird for cynics. My muxtape is pretty much all future Apple ad songs. Make your own, share it in the comments below, best muxtape wins.