Sentence:  The automobile <WSD>metamarket</WSD> consists of automobile manufacturers, new car dealers, service shops, auto magazines, classified auto ads in newspapers, and auto sites on the Internet. In purchasing a car, a buyer will get involved in many parts of this <WSD>metamarket</WSD>, and this has created an opportunity for metamediaries to assist buyers to move seamlesly through these groups, although they are disconnected in physical space. 
Meaning of the word marked with <WSD> tags:  A group of businesses that offer products that are related from a consumer's perspective but which have no institutional connections.