. . . it's this.
http://www.encyclopediadramatica.com/index.php/Ninjas_vs._Pirates Apparently someone with the vocabulary, intelligence, and maturity level of a 14 year old has seen fit to write up a rather unfunny criticism of our bit of harmless sport. They even linked this community.
If giant cyborg mockingbirds, the undead, and undead giant cyborg mockingbirds weren't enough reasons for a temporary truce, this group of juveniles certainly is. Do your worst, so we can get back to the important issues in life, like whether a rapier or a scimitar is better than a ninja-to (or a katana for true dumbasses who think real ninjas used katanas) or the finer points of which side has better representation in the media.
~EEE~
[Edit]: Pinjas! That's the other thing we can all agree on that suck and need to die.