I found this interesting post from Chris Anderson (author of The Long Tail and Editor-In-Chief of Wired Magazine.) He's tired of getting hammered by PR folks who don't know how to pitch to him via email so he's banned them from his email. To take it up a notch he posted all the banned email addresses on a blog post. Yes, the deer have guns. Here's another example of a PR firm that struck out. Darren Rowse at ProBlogger was providing some insight on this topic recently too.