These are the fruits of my lurking and reading: important dates of 4chan until 2008. (ED has us covered after 2008.) The important question here is what should be done with this? If /b/ is the landlord, then it makes sense to introduce him as the first on to the party. We could ignore boards that existed for a short time (/l/, /5/, /z/, /sm/), but introduce the rest of the boards in order so that the reader is not overwhelmed with "oh god who are these people."
2003
October 1
/b/ - random
October 2
/h/ - Hentai
October 6
/c/ - Anime/Cute
/d/ - Hentai/Alternative
/w/ - Wallpapers/Anime
/y/ - Yaoi
/i/ - oekaki BBS board
October 9
/g/ - Guro
/s/ - Sexy Beautiful Women
November 8
/a/ - Anime
/l/ - Lolikon
December 16
/t/ - Torrents
December 29
/l/olikon is taken down due to CP
2004
January 8
/l/olikon returns
/r/ - Requests formed
January 25
/t/ removed
February 14
4chan.net is suspended, 4chan.org is "temporary" home
February 19
/t/ - Torrents returns,
/f/ - Flash founded
cgi.4chan.org hosts /f/
March 28
4chan.org is made permanent
/g/uro removed
September 8
/k/ (Weapons),
/o/ (Auto)
/sm/ (Shota/Male)
"/b/ is severely lacking in quality...contribute better"
October 9
/v/ (Video Games)
/n/ (Trains) is deleted
/z/ created
October 31
/l/ (Lolikon) and /sm/ (Shotakon) are deleted due to threats of legal action.
November 5
moot registers not4chan.org and moves /l/ and /sm/ there instead
November 15
/g/ (Guro) is deleted
November 1
/z/ was deleted
2005
January 19
/e/ (Ecchi)
/g/ (Technology)
/n/ (Nature & Wildlife)
January 27
/ic/ (Artwork/Critique)
/p/ (Photography)
/x/ (General Photo).
Although there was already a /p/ board for photography before, it is the replacement, with new features (such as EXIF data).
February 26
/gif/ (Animated GIF)
/hr/ (High Resolution)
/wg/ (Wallpapers/General)
August 28
Donate or Die
October 30
Snacks leaves
2006
February 6
/5/ is deleted
April 6
/co/ (Comics & Cartoons)
/po/ (Papercraft & Origami)
/sp/ (Sports)
Two days later
/cgl/ (Cosplay & EGL)
/ck/ (Food & Cooking)
/mu/ (Music)
/n/ (News)
/tv/ (Television)
(I am assuming /m/echa, /an/, and /cm/ are up at this time also)
April 20
An Hero raid.
June 15
Tom green raids.
June 17
Zelda Guide Forums raid.
June 19
naruto-kun.com raid.
July 12
Pool's Closed raid.
August 22
Proana.us, teenbabynet.org, WikiFur raided.
August 23
/b/ day.
img.4chan.org crashes, leaving 14 boards, including /a/, /an/, /b/, /c/, /cm/, /g/, /k/, /m/, /o/, /p/, /r/, /s/, /t/, /v/, and /w/ inaccessible.
/b/tards fleee to 7chan, iiChan, 2ch.ru, and 420chan
img.4chan.org didn't return until August 25, two days later.
September 11
Pool's closed, due to stingraids and raids.
October 1
4chan fgt hat day (3 years, baby!)
December 20
Hal Turner gets raided by 4chan, 7chan, YTMND, Something Awful, and Bantown
December 25
Hal Turner's vacation gets raided.
December 31
Hal Turner surrenders to 4chan: "I am not certain where to go from here. My entire existence - short of my physical presence on this planet - has been utterly wrecked, by people I never met from places I've never been."
2007
January 9
moot allows all of the trial boards created on April 6, 2006 to become full boards, except for /sp/ (Sports), which is deleted.
February 15
/tg/ (Traditional Games)
/x/ (Paranormal), created due to the popularity of 7chan's /x/ board.
March 21
Kelly Isenhower gets raided.
March 26-April 1
the re/b/oot. moot fags up /b/ to get rid of cancer.
April 28
4chan, 7chan, and especially 420chan combine forces to attack Subeta in order to take back longcat. The battle is long, but anon triumphs.
May 13
moot fags up /b/ to help stop the cancer again. 10% decrease in posting rate for a week. When it goes back to normal , people complain.
September
/rs/ - Rapidshares
October 1
4chan fgt hat day again. Fun times. (FOUR CHAN FOUR YEARS)
December
4chan gets a makeover
2008
February
/fa/ - Fashion
/fit/ - Health & Fitness
/hc/ - Hardcore
/n/ - becomes Transportation
/sp/ - Sports
/toy/ - Toys
/trv/ - Travel
/jp/ - Japan/General
/r9k/ - ROBOT9000
