The dominance of the iPad is extraordinary, occupying nearly three-quarters of UK sales and growth is strong. Samsung's Galaxy is a long way behind. With smartphone sales on the up, e-book readers doing well and strong performance of netbooks, it feels like we are going to have a spectrum of form factor from small phones though to desk-sized sharing tablets. 

What is a tablet? Anything with a touchscreen seems a bit vague to me. Wikipedia has a reassuringly detailed entry that is sure to need constant revision.