Im trying to write one.
Indymedia has a huge amount of pages on it's group projects and processes at http://docs.indymedia.org they are made on a twiki (see twiki.org) which allows many people to edit one document.
I have tried to follow that example to make a photo help page http://docs.indymedia.org/view/Main/PaulCummins which would end up looking something like this http://www.redbrick.dcu.ie/~chewy/temp/photohelp.html
The page is mainly a collation of the text on the publish page and replies to request for help on publishing photos from the editors.
I've pointed out at some of the points needed clearing up in comments at the bottom of PaulCummins
Using and making Twiki's takes bit of getting use to but I am hoping this photohelp page can be an example for using twiki for other indymedia.ie collaborative projects.
you can browse around at http://docs.indymedia.org which has a number of help pages or register to edit here http://docs.indymedia.org/view/TWiki/TWikiRegistration or add corrections/suggestions to the comments here,