(Toby Bartels toby+wikipedia@math.ucr.edu):
- What is legal for any one user to do in the nation they are submitting from.
- What is legal to have on our server in California (this applies to everything we all submit; all text/media must be legal under California/US law).
I don't think that we-as-a-group (Wikipedia as an institution) should concern ourselves (in our policies) with issue #1. We should not, for example, declare it a bannable offence or against Wikipetiquette to violate local laws when submitting.
Indeed, I would consider it heroic to violate local laws to post useful information on Wikipedia, such as first-hand descriptions of the acts of despotic governments, or information about how to defeat net access restrictions.
A more tricky issue is postings that are legal elsewhere but not legal in California, such as the posting of information that is public domain in places whose legislature isn't owned by Disney. We probably have to supress such information, which is a shame.