Google Music Trends
The Google labs site is now offering an experimental Google Music Trends that tracks what is popular in music. Google Music Trends is similar to last.fm... you install a plugin for one of the popular music players, and the plugin sends data about what music you are listening to back to google, where they aggregate all of this information and then show 'top songs' charts for various genres. Unlike last.fm, they anonymize the data and only present summary information about what is popular, whereas last.fm offers the whole social music experience. Compare what Google Music Trends does to what last.fm does and it is clear that last.fm is doing this sooo much better ... but still, if I were the CEO of last.fm, I'd be feeling just a little nervous. (via MF on Liste Music-IR).