I run a network of several automotive websites. My members constantly complain about having to register on each site in order to post. I've searched and concluded that it would be far too difficult to use a single user database for all sites, but i'm trying to come up with other idea's. What about a cron job or something that could compare the user table of each site and copy the new users to all the sites? I have a speedy dedicated server, and all the sites are on that one server. Any other idea's?