But, in my paranoid world I started thinking. Is there any dangers to using it? Do you really want people to know you listen to Britney Spears 70% of the time? One forum user has listened to Roxette 3,079 times overall! The next on the list only got 313 plays. Do we WANT to know this?
Could it actually be exploited by the music mafia, threatening to tell all your friends you listen to Dolly Parton all the time, if you don't hand over a huge sum of money?

Music taste is pretty personal and I guess you do judge people by it. It's pretty harmless and I'm not being THAT serious here. But think about it for a while....