think its great for the kid to use it – I grew up with pretty bad dyspraxia and one thing I was encouraged to do was play computer games, learn to prgramme etc – from the age of about 9 – so was an early adopoter of BBC Bs back in the eighties – it sure beat building macrame hanging baskets / making your own shoes as part of occupational therapy.
My 18 month old can 'mouse', loves watching the fractal display on media player (with a bit of orbital), likes some of the stuff on the bbebies site and has figured out that it really annoys his mum if he turns her pc off when she is using it – all good stuff, and a whole world of it to learn – kids these days are really lucky in that as well as the world outside to explore and dog poo to poke, they have a whole extra dimension that some of us of a certain age didnt have when we were young