Could this be the beginning of the end? Lady Gaga has now added the distinction of taking the top positions on Last.fm's latest "Most Unwanted Scrobbles" list. Seven of her hottest  tracks including mega-hits "Poker Face" and "Paparazzi" were among the most frequently deleted  form user playlists last month on Last.fm. Ke$ha and Justin Beiber rounded out the top 10.