iTunes singles:
Apple has joined as a American Idol season seven major sponsor with performances (videos as well as songs) made available via the iTunes Store. Although "sales of current Idol tracks are not reported or charted" by Billboard, on 5 March 2008, Archuleta's singles "Imagine" and "Shop Around" were in the top of the iTunes' Idol (season 7) releases. Billboard noted that Archuleta's "stunning performance" of "Imagine" boosted the original by John Lennon back onto the "Hot Digital Songs" top 100 (at No. 47).



Fans:
Archuleta's fans have been dubbed "the Archies" and the "Arch Angels" with his "cultlike appeal" nurtured by his work on American Idol attracting a wide demographic including "grandmothers and teenage girls."Archuleta was labeled the front-runner by both the judges and the media because of his good looks and his "pure, pop voice," which have helped him build a huge fan base during the competition.Billboard magazine's Fred Bronson notes “David fills a spot where there’s a void. . . . [H]e has innocence and humility.” Los Angeles Times' Richard Rushfield noted that the "tween/teen girl hysteria" has only increased despite some less than amazing performances. Archuleta seems to be sympathetic with his audience, as since his performance of "Angels" he has been responding to requests of his fans on the American Idol Forums to signal them by putting his hand over his heart. Rushfield commented on some of the girls who were standing in the front of the audience: "An hour after the show, they were still shaking, sobbing and screeching about their encounter with the Chosen One [Archuleta]." Teen-based entertainment is "surging" and the teenage voters may have accounted for the teenaged Jordin Sparks who beat out front-runners Blake Lewis and Melinda Doolittle last season. Referring to American Idol's system of popular voting for the remainder of the competition, Rushfield said, "No demographic can match the voting power of hysterically excited teen girls."

David's Wiki