Hagel, John. <br/><br/>
Networth :  shaping markets when customers make the rules / 
John Hagel III and Marc Singer. 
 - Boston :  Havard business school,  1999. 
 - xx, 313 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0875848893 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Online information services.<br/>Consumers --Information services.