I'd be happy to help contribute to such a comm, though my tech knowledge also isn't that extensive, I have had some experience with wordpress, openID, and running my own domains.
I don't know anything about the tags issue though. I'm using both services, not migrating, so I haven't had to deal with that issue. As far as I know, there isn't a way to move them right now, but who knows... I could be wrong.
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