Seventh of ten programmes about computers in society with Fred Harris.  Housewives Choice?:  Are you a 'modern clean liver', or a 'guilty eater'?  Advertising executives pour over their computer Printouts trying to find the sort of person who will buy their breakfast cereal. Rather than promote the product to all and sundry, they are hoping to appeal to a 'niche market who will appreciate quality and pay extra for it.