A computerized, electronic purchase mediating system includes a purchaser database having a list of purchasers and a merchant database having a list of merchants. The purchaser database stores information about each purchaser including a set of personal payment methods that the purchaser could use to...http://www.google.co.uk/patents/US5878141?utm_source=gb-gplus-sharePatent US5878141 - Computerized purchasing system and method for mediating purchase transactions over an interactive network
