Weeks after taking enormous heat from consumers, public interest groups, and the media (like us), AT&T is doing an about-face on its controversial decision to limit iOS 6's support for FaceTime over cellular to its new, pricier Mobile Share plans. That's great, but don't give AT&T an ounce of credit — the move is mysteriously taking eight to ten weeks to implement, and it's merely restoring functionality that should've been present from day one. It also would've never happened had organizations like Public Knowledge and Free Press not made it clear to AT&T that they'd pursue all legal avenues to get the block removed. "We got to a place that