While iTunes users were barbecuing and preparing for fireworks this weekend, hackers smoked their accounts, buying apps with stolen money to drive specific apps up the sales charts.
TNW Apple reports hacking incidents have been reported worldwide, and users have been hit with phantom charges between $100 and $1,400.
So yeah, now would be a good time to check out whatever account you have linked to your iTunes, and to change the password.
App Store, Hacked. (Updated: iTunes Accounts too.) [TheNextWeb Apple]
Reports: iTunes accounts, App Store hacked [CNet]