http://blogs.msdn.com/b/alexbarn/archive/2004/07/21/190700.aspx"To search for information, a user sends a question to his own referral agent, which broadcasts the query to all of the user's buddies' agents, said Zhang [researcher at University of Michigan]. A referral agent in the buddy's messenger searches its informationen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/alexbarn/archive/2004/07/21/190700.aspx#199571Wed, 28 Jul 2004 16:38:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:199571A Short Domain Name<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=199571" width="1" height="1">