I had a meeting at Islington this morning in connection with the Islington Children's Trust - a thing to do with me being a school governor, and thereafter went in to John Lewis, Oxford Street. On my way in, on the Victoria Line, I had my third sighting of an iPad in use. This time the owner was using it to read a newspaper; or perhaps a magazine. Then in John Lewis I saw their iPad display - but most of the people trying them out were teenage boys playing a racing game where you swivel the iPad like a driving wheel. Not sure that counts as a "fourth Sighting", but each time I have seen them they are being used for a slightly different purpose.