List cool oekaki boards here!
NOTE THAT SOME OF THE LINKS FOLLOWING MAY HAVE VERY ADULT CONTENT YADDA YADDA YA! You have been warned.
http://suteki.nu/oekaki/b/wakaba.html - Wakaba Oekaki. You should all know WakaChan's replacement for iichan's /ob/ and if not you're ignorant dumbasses.
http://ex.x0.com/~emperor/oekaki/picture.cgi - a pretty cool board I stumbled upon while browsing some Marimite fanart site. Some of the artists posting there have really awesome & unique styles!
http://sugarisland.org/oekaki/ - NIGHTMARE OEKAKI, an English Guro oekaki board that also links to several other oekaki boards, among them some of the following:
http://rakugaki.site.ne.jp/oekaki/ - Rakugaki Oekaki, the second incarnation of one of the most infamous japanese Guro oekaki boards. Very small post treshold, thus neccessary to visit often to not miss anything.
http://www.eatpoowith.us/cgi-bin/extreme/picture.cgi - Poo Eaters Anonymous, English adult oekaki board with low traffic but very good artists.
http://doodledraw.com/ - There is a good reason to hate anything Jay Stile created or just touched, maybe even this site. More traffic than your average English oekaki board, but also a lot of shit to wad through. Good thing there is an archive for only the best entries.
http://kasumi.sakura.ne.jp/~radio/oekaki/bbsnote.cgi - A futanari/dickgirl board. Very little traffic, but some awesome artists post there.
http://www.fearsome-oekaki.com/ - English adult oekaki board. Much traffic, pretty good quality all around.
http://red.sakura.ne.jp/~nankyoku/char.html - Several japanese oekaki boards dedicated to fanart of series, I think. Content varies from cute shoujo-ai to hardcore yaoi.
http://www.2chan.net/oe/futaba.htm
http://zip.2chan.net/p/futaba.htm
http://up.2chan.net/q/futaba.htm
http://cgi.2chan.net/u/futaba.htm
2chan's oekaki boards - I have no idea which serves what purpose exactly. shut's interpretation seems to be misleading, I think: raspberryheaven.net/~shut
It's unneccessary to add that these (esp. /q/) harbor the best oekaki artists out there.
http://oekaki.shii.net/ - only oekaki you ever need
Sexual fetish oriented oekaki
so far it's mostly happy japanese mock americans' misuse of "hentai" oekaki
http://adelheit.hp.infoseek.co.jp/
Seems to be an archive of various oekaki storylines off 2chan.
Make sure to check out the epic Shirley/Emma/Kamen Rider cross-over: http://adelheit.hp.infoseek.co.jp/rider/index.html
oekakiBBS is run by poosite, who were the ones who invented oekaki way back when.
Here is mine: http://www10.oekakibbs.com/bbs/cidsa/oekakibbs.cgi
Funny Futaba thread, originally for their SQL oekaki board, in which they mention WAKAchan a few times: http://www.2chan.net/test/read.cgi?bbs=ascii&key=1111748094
hi
tanasinn
http://asame2.sakura.ne.jp/honita/cgi-bin/bbsnote.cgi
Very nice one, awesome contributions, mostly humorous.
http://neoartists.org/oekaki/ - Neoartists.org Oekaki; Adult oekaki board, most drawings are tame but mature subject matter allowed, sexual, political, etc. All skill levels permitted... The majority of the artists here are at the intermediate level, though it seems some of the regulars here post one amazing drawing after another.
Tired, but can't seem to sleep, and all those sheep you're trying to count just won't cooperate with you? Drop by the Insomniac Oekaki Board, and draw your troubles away ^.~
Do want.
http://pokepun.com/ An oekaki for pokepuns.
Lawlsuit oekaki is designed for anyone who is mature enough to not act like a little kid. Lawlsuit holds contests from time to time, with a range of prizes from real money, to web hosting, or various other prizes, depending on what the site owner feels like giving that month.
http://oekaki.pl/ The biggest and the best oekaki board so far (and the most visually appealing).
It's Polish, but you can speak English there, with polish users and other foreigners.