Heh, a friend of mine calls sending submissions out 'wallpapering', because he has gotten enough of them to paper his office. (Admittedly more of a closet with a computer and a printer, but still...) Most are forms, one or two were downright rude, and the one he cherishes most was the one that accidently accompanied his first submission to be accepted - it came with the check. After more than 10 years he still gets more rejections than acceptances, he gets back the rejection letter and then he sends the ms. out to another publisher or magazine, so each attempt may engender multiple letters.
Knowing authors can be odd, I saw one acquaintance's book show up briefly on the best seller list and went, 'Hey, that's the guy who used to cadge empty bottles off of me at the game store!' Strange, strange feeling. (Matt Ruff - Gas, Sewer & Electric if anybody wants to know, very strange book, but fun.)
The Auld Grump