Apple announce facetime over 3G.
This one would have been higher on the list, if only it didn’t remain so limited. FaceTime is a great idea from Apple which remains hamstrung by hardware and network limitations. Video clarity is still at the mercy of your network connection, and while 3G will help to extend the platform, it won’t be anywhere near its potential.
Three things will need to happen for FaceTime to truly take off on iOS- 4G broadband must become readily available, data charges must come down or limits must be raised, and battery life needs to be such that your device can handle a prolonged video chat without the need for an immediate re-charge.