This blog lostinshowbiz is the ultimate revenge on PRs who, for instance, see an opportunity to plug products on the news of the death of David Cameron's son or Jade Goody's cancer or are just rubbish at their jobs.
It has a great tagline: "Where PR howlers come to die" and makes you feel that however bad things are in journalism at least you are not having to make a living like some of the desperate PRs featured.
Examples of PR disasters range from the stupid and incompetant to the completely appalling.
This site puts the ace in acerbic commentary.
Story via the subscribers' email from the superb The Word magazine.