As someone who was originally headed towards the path of editor/agent until life made a wacky turn, I've got a lot of sympathy for the folks who do this for a living. Man O man, the patience it must take! Yes I'm sure it may be worth it, but hot damn, if I had to crawl through the slush pile like these folks do, I might be in a fetal position right now.
9876 Wacko Blvd.
NY, NY 12345