What's Your Advice About How to Find an Agent?

http://www.bigfoto.com/

One writer/blog reader indicated to me his issues with finding an agent.  It seems he's hearing the refrain, "It's not what I'm looking for."

One online site I've heard of is Agent Query.  By inserting certain criteria into its search engine, a writer can narrow a search by the genre of fiction or nonfiction he or see writes.  The site also contains a great deal of information about literary agents, how to submit to them, how to write a query, and a truckload of other information.

Literary Marketplace, both online and in print, also contains similar information.

But what about some real, live input from you writers out there who HAVE agents?