Passive-Aggressive Notes

Passive-Aggressive Notes is a website that documents "painfully polite and hilariously hostile notes from shared spaces the world over"; most of these spaces are shared apartments, offices, or stores.
"Passive-Aggressive Notes" is similar to other projects like "Found Magazine" and "PostSecret" that also collect handwritten notes, and shares a similar "blog" format (where readers send in their own entries to the site) as the humor sites "Photoshop Disasters", "Not Always Right", "Overheard in the ER", and "Things My Mother Said".
Purpose.
According to the site, "for the purposes of this project, we're using a pretty broad definition of "passive-aggressive" that roughly correlates with how the term is popularly used."
As the "New York Times" wrote: "the classic description of the behavior captures a stubborn malcontent, someone who passively resists fulfilling routine tasks, complains of being misunderstood and underappreciated, unreasonably scorns authority and voices exaggerated complaints of personal misfortune"."
History.
The site was founded in May 2007, by Kerry Miller, a writer based in Brooklyn, New York.
"Passive-Aggressive Notes" has spawned a book published by HarperCollins. In the United States and Canada, it is titled "Passive-Aggressive Notes"; while, in the United Kingdom and Australia, it is titled "Your Mother Doesn't Work Here".