Exec Summary: Support for two different people, two different sub-sites, same user name.
I am supporting a Multisite Network install with many sub-sites. Each WordPress sub-site should act like it's own install; I would like to allow different users to have the same user name on different sub-sites. For example, it should be possible for the user 'joe' on http://www.domain.com/site1 and http://www.domain.com/site2 to be two different people. Is this possible in WordPress? If not, are there effective workarounds?
Thanks for any help.