NGP will link games/stores and social details in a step up from existing console/PC products. A neat video from Japan (with English screens and voice over) shows how it all works, so beautiful and seamlessly, far beyond the likes of Apple's GameCenter and so on.
The video was posted on PSlifestyle, and there seems to be a lot more, but it cuts out shortly after this demo. Will be interesting to see if anything else springs up. Note its running on a 3G model but the best thing (for me) is the level of social interactivity within the game area.