Apple has launched a pre-emptive strike on stores selling unauthorised iPhone applications, by changing the terms and conditions of the iPhone SDK to make authoring content for such sites against the rules.

We in the U.S. love to complain. Take this week's introduction of Skype for the iPhone. The mobile VoIP client appears to be a pretty solid offering, letting you not only chat with your Skype buddies, but also make voice calls -- as long as you're using the Wi-Fi connection, a stipulation Apple had pointed out way back in March 2008 when it first unveiled the iPhone SDK. (Also see PCWorld.com's review.)

An open-Internet advocacy group asked the Federal Communications Commission Friday to investigate whether Apple Inc. and AT&T Inc. are violating federal rules by limiting use of a new low-cost Skype voice service on iPhones.