[citation][nom]BallistaMan[/nom]Just me, but I'm not that comfortable giving Apple my credit card info (I currently avoid iTunes). Although, it would be funny if someplace like Newegg used it, and then I buy a copy of, say, Windows 7 with it.[/citation]
Sadly, lots of people are buying tunes on iTunes.
With apple's lack of experience in security, I don't trust them with any information like this.