People who have already contributed: me, inkylj, georgedorn, K-Y, isquiesque, astrobolism, baf, jessknoch, jotasbrane, jackbishop, olethrosdc, nothings, jrw, jearl and lpsmith.
Of course, I'm assuming that everybody has more or less forgotten everything about this, so if you've already gone and want another shot I'm fine with that too.
Original parameters, abridged:
Everybody will know the title: A Critique of Pure Soapsuds. Each contributor will draw one panel..
Each contributor will see the two panels preceding theirs. The first of these will have text; the second will be textless, as in CWV. They add text to the second panel, and produce a panel without any text.
Size restrictions: the panel must be 500 pixels wide, and can be any height up to 500 pixels.
Everyone will get to see the final panel and submit ideas for what the text should be; then we can have a poll to work out whose text gets added.
There will be a three-day time limit to complete your panel.
Also, participants should make sure that I have or can get hold of a valid email address.