The Internet reduces much of the costs of information sharing, but it does not solve information receivers' reading and interpretation limitations. Browsers and navigators ease information retrieval but do not solve the problems of specifying information needs and evaluating retrieval results. This article approaches these problems as information market problems with solutions consisting of information market service process models. These models link information suppliers and buyers and define activities, information resources, and information flows for the information market services. The models identified may improve the quality, speed, design and realisation of information market services.