Pandora
Type in the name of your favorite band, and within moments the site will be streaming a radio station, featuring songs from that band and others like it, to your desktop through your browser no registration and no downloads required. You can "tune" the play list by using the thumbs-up and thumbs-down buttons. A new Backstage section is a searchable directory of artists and albums "your door to the music universe" courtesy of the Music Genome Project.
50 Best Websites 2006
Many of this year's choices are shining examples of Web 2.0: next-generation sites offering dynamic new ways to inform and entertain, sites with cutting-edge tools to create, consume, share or discuss all manners of media, from blog posts to video clips.