Seems to be ITunes accounts have been hacked to make mass purchases of one developer's app.

As a safety measure, I recommend to change your ITunes password ASAP and, if you feel paranoic like me, delete your credit card info from the account until this issue is clarified.

More information at: http://www.alexbrie.com/archives/205, http://thenextweb.com/apple/2010/07/04/app-store-hacked

-- Manuel Humberto Santander Peláez | http://twitter.com/manuelsantander | http://manuel.santander.name | msantand at isc dot sans dot org