God I love these perverse little lists: A web site that tracks what its users listen to on iTunes has compiled a list of the songs its users most often delete from their records, presumably tracks that people listened to but don't want anyone to see. So what are the most popular guilty pleasures?

Surprisingly, the Beatles are the most often deleted artist (after "unknown," for obvious reasons). Maybe there's an error, but maybe they're so often played but so little identified with modern cool. Couldn't imagine why, really, other than "Birthday" inexplicably popping up in everyone's Party Playlist. Second place goes to Radiohead, then more predictably Britney Spears and Avril Lavigne.

Spears also tops the single tracks list, with her song "Piece of Me" winning the spot of Most Regrettable Song. She shares the rest of the list with Amy Winehouse's "Rehab" and Avril Lavigne's "Girlfriend," definitely guilty pleasures for the sort of hipster who would try to clean up their own listening history.