On 12/08/2011 10:44 PM, John Elliot wrote:
It wouldn't be the same type of "blow by blow" attribution that you get where you can see a log of specifically what contributions particular users had made
Although I guess it would be possible to go all out and support that too. You could leave the local user database as-is, and introduce a remote user database that included a namespace, such as en.wikipedia.org, for usernames. For mirrored content you'd reference the remote user database, and for local content reference the local user database.