Adele's hit single "Rolling In the Deep" is now the biggest-selling digital song by a woman of all time, as the track was downloaded 99,000 times in the week ended February 26th, according to Nielsen SoundScan.  That brings the total digital sales of the single to 6.68 million, just ahead of the 6.62 million recorded by Lady Gaga's "Poker Face," which slips to second all time.  "Rolling" is now also the second-biggest seller overall, behind the Black Eyed Peas' hit, "I Gotta Feeling," which has sold 7.82 million copies digitally.