http://publications.mediapost.com/index.cfm?fuseaction=Articles.showArticle&art_aid=68558
FOLLOWING CLOSE ON THE HEELS of last week's announcement from Clear Channel Radio, virtually all the other big American radio broadcasters said Tuesday they will begin using technology that allows listeners to "tag" songs played over HD radio for later purchase on iTunes. The list includes CBS Radio, Cumulus Media, Cox Radio, Entercom Communications and Greater Media.