Custom Online Radio Stations
Seen these yet? They can help you find new music based on what you like now.
Type the name of an artist or song you enjoy. Pandora will create a custom online "radio station" playlist for you, using its extensive database called the Music Genome Project.
Combines social networking with your listening tastes. Every time you play music on your computer, Last.fm learns your particular likes and attempts to suggest things you'll enjoy. Meanwhile, connect with others who listen to the same music.
TechCrunch features reviews of these tools and many more linked with the tag: "internet radio".