Last week’s “American Idol” finale certainly added some spice to a slow run on this week’s Billboard charts, with winner Lee DeWyze, runner-up Crystal Bowersox and a number of the show’s guest stars impacting the Digital Songs chart and the Billboard 200 albums tally.
Many of the contestants’ songs have been available to purchase in the iTunes Store for weeks now, but — as has been done in years’ past — their weekly sales are withheld from SoundScan (and from appearing in the iTunes Store’s own popularity lists) so as to not influence the voting public in the course of the season. » Read more: ‘Idols’ Lee DeWyze, Crystal Bowersox Impact Billboard Charts



