I love this mod! I just installed it. I have a test user account that I added to the miserable group, when I logged in with this user I saw it in action.. GREAT! However... you say it's based on IP and username. Well, I went to log back into my admin account and all I got was "database error". I thought somehow my db got screwed up. I went into mysql and removed my test user account from the miserable group and whalla, I was able to log in again with my admin account. Looks to me that it only looks at IPs, not usernames. Is that possible?
I would love to be able to have a list of URLs to redirect to.. I've got a guy that's on the opposite political spectrum from me and I would love to send him to various (appears random) web sites of the opposite persuasion.

Any tips on how this could be done instead of just one redirect URL?
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