Indeed, yes, as Rachel C commented on my post below, the Colour Wars of Twitter* are indeed All Ze Frank’s** fault. See his explanation which he just Tweeted.
Seems it is a leftover from Summer Camp, an American phenomenon of which I have been eternally jealous. Let the wars begin. GO OFFWHITE!
*I refuse to spell it the wrong way.
**I interviewed him once at TED Global. Always regret not having published it. He was lurvely.
kitten fluff 
you probably don’t remember me at all.. we met on seesmic about a month ago.. from London but recently moved to Austin, i saw your SXSW video and she you are in my neck of the woods! Did you enjoy austin?!