Wikihistory: sf story about the revert-wars among time-travellers -- "everybody kills Hitler on their first trip"

"Wikihistory" is a delightful science fiction short story by Desmond Warzel in the form of a series of messages posted to a time-travellers' forum -- it's basically a Wikipedia edit war, where the old hands have to keep on slapping down the noobs for killing Hitler:
International Association of Time Travelers: Members' Forum Subforum: Europe – Twentieth Century – Second World War Page 263

11/15/2104
At 14:52:28, FreedomFighter69 wrote:
Reporting my first temporal excursion since joining IATT: have just returned from 1936 Berlin, having taken the place of one of Leni Riefenstahl's cameramen and assassinated Adolf Hitler during the opening of the Olympic Games. Let a free world rejoice!

At 14:57:44, SilverFox316 wrote:
Back from 1936 Berlin; incapacitated FreedomFighter69 before he could pull his little stunt. Freedomfighter69, as you are a new member, please read IATT Bulletin 1147 regarding the killing of Hitler before your next excursion. Failure to do so may result in your expulsion per Bylaw 223.

At 18:06:59, BigChill wrote:
Take it easy on the kid, SilverFox316; everybody kills Hitler on their first trip. I did. It always gets fixed within a few minutes, what's the harm?

Link (via JWZ)