an online environment that allows artists, designers, photoshop junkies, pixel pushers, collage artists & photographers to collaboratively design & edit a single image. in kollabor8, each image chain is an open digital image mutation collaboration, displayed like threads in a forum. each link in the chain is in some way a derivative of the previous image, as designers iteratively add aesthetic features in a collage-like way. see also gridlove & swarmsketch.
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information aesthetics.Where form follows data.
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http://www.designologue.com
a bit more aesthetically driven, admittedly not a public forum.
it's a pity the url doesn't work yet.
i'm still on a collaborative image/text project too. have a look at botnik and there click #6.
people can leave pictures and small texts wich are combined by random in a kind of flashy way...