[Wikipedia-l] Copyright violated in Talk (and article history)

[Tomos at Wikipedia]

Currently, http://www.wikipedia.org/wiki/Wikipedia:Copyrights says, as I 
undersand, that when one finds a suspected case of infringement, s/he should 
delete that part, and then leave a note on the deletion "along with the 
original source" in talk page.

What Menchi encountered were perhaps a result of that instruction.

Also, I have been wondering if English and other wikipedias keep 
copyright-infringing material in the article history. True, it is not 
accessible from search engine, but keeping an infringing material in the 
page history sounds anyway illegal. And one may download the data including 
past versions and think
the whole thing is under GNU_FDL. Is it trivial enough to ignore?

In Japanese wikipedia, the whole article gets deleted when some infringement 
is found (or when highly suspected case is not cleared after some period). 
Upon deleting a page, non-infringing text exist in the past or current 
versions will be recycled - but the revision history is gone. I don't know 
if this practice will sustain if, say, someone does an infringing pasting to 
an article with 100 revisions, though.

If adding a new function for deleting just a past version of an article is 
fairy easy, I personally would like it to happen.

Currently, Copyright infringement notice in 
http://www.wikipedia.org/wiki/Wikipedia:Boilerplate_text include "unless a 
stub replaces this text, deletion will occur." So are there indeed articles 
with infringing materials in some past revisions?

Cheers,

Tomos

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