I disabled it in the language settings in system preferences, but it keeps autocorrecting me on websites and apps. It is really annoying because I use a lot of slang online in forums/chats. I also use a lot of shorthand for notetaking, and it keeps correcting it. Why didn't the system prefs thing fix this?
iMac, Mac OS X (10.7), 2011 1TB, 2GB GFX, i7, 12GB Ram