iScrobbler is an iTunes plugin that monitors the songs played on iTunes and creates reports about different users’ tastes and how often a certain song or artist is played.

What’s new in this version:

Version 2.0:

• Full Radio support (played through iTunes).
• Multiple iPod play count support.
• Brand new local charts, with multiple separate charts (including your complete iTunes history).
• Leopard specific enhancements, including Front Row support and a native 64-bit Intel binary.
• Basic Applescript support.
• Expanded use of Growl.
• Many other minor features and bug fixes.

Website
Download iScrobbler