Ran into a cool web site. It's for writers who've collected their share (or more than their share) of rejections. There's a place to rant, a place to share your worst-rejection-letter story, and other pages on the site. It's called www.rejectioncollection.com. If you write, I recommend it, if only for some of the snarky comments on rejection letters.
In fairness, some editors' posts are worth reading, too. Possibly they defend themselves a trifle too strenuously, but it's good to remember every story has two sides.
Even rejection letters.