bonch writes "Last.fm and CBS vehemently deny sharing any user data with the RIAA, contrary to previous reports. One anonymous party calls it 'irresponsible journalism,' and Last.fm goes so far as to suggest it is a target of slander. Carla Duckworth of the RIAA confirmed, 'We've made no such request for this information.'"
Computers are unreliable, but humans are even more unreliable.
Any system which depends on human reliability is unreliable.