PROS
- The Scrobbler can help create more complete recommendations, because once you download the Scrobbler, any music you listen to on iTunes gets added to your playlist.

CONS
- Doesn’t allow users to add their own artists, albums, or songs to the database, which could hurt up-and-coming bands
- Sometimes if you select a particular band and try to play that band’s radio, you can listen to that radio for an hour and NEVER hear a song by that artist. For example, I tried to listen to the band Peach, clicked “Play Peach Radio” and never heard a song by them.
- It isn’t the greatest system if you’re interested in classical music.

RECOMMENDATIONS
- If you want to listen to similar artists to the ones you like, and you like a few specific genres, Last.fm is for you
- If you have a wide variety of tastes, but still want recommendations, go Pandora
- If you want to skip recommendations and just build an online, iTunes-style playlist, try Grooveshark.