So we learn from Secret Notes:

Apple's stylish stores and computers, all of which feature unrestricted Internet access, have become such the hang-out and gathering place for MySpace junkies that the powers that be have elected to block the popular social networking site from its systems.

By the close of business Thursday, most Apple retail stores will have implemented the block, designed to reduce the level of loitering at the stores.

More likely Apple's design aesthetic just cannot brook dreadful MySpace page designs appearing within their bricks and mortar.

The horror! The horror!