Edd Dumbill at O'Reilly Radar - The iPad is real-life social:

"After reading one such blog post saying that the iPad was antisocial, because it didn't have SMS or the ability to run IM in the background, it struck me this was a restricted view of what it means to be social.

The iPad is real-life social in a way that a phone and a laptop just aren't. You really can just hand it to someone to show them what you mean: share photos, videos, writing with real people right next to you."