Editing material which originates in Iran, North Korea, Cuba and other nations with which most trade is banned without a government license may be illegal. It is interpreted as aiding the enemy. No corrections of spelling or grammar would be allowed under this interpretation, only use of camera ready copy. Theoretically correcting a spelling mistake by Osama ben Ladin would fall into this category of crime.
This potentially affects us as we can in the routine conduct of business, without even knowing, accept imput from these nations, from a user who simply appears to be an ordinary user.
One could interprete this to apply only to input the origin of which is clearly identified.
http://www.nytimes.com/2004/02/28/national/28PUBL.html?th
New York Times login required
Fred