Its rather easy to write in pywiki I just need some information from you about your wiki. (IE are all edits after X date bad, we only have Y valid users and here are their names) exc stuff like that allows me to tailor the script to your needs.
Can I get a link to your site? I would love to take a look and write you that script, (I always love a challenge)
If you make your script have some sort of configuration variables or something along those lines for these different things, then you could release it and many people could be helped by it.
If you do decide to release it. I would cross post to the mailing list for Mediawiki administrators as well. I'm sure someone on there could use it.
Thank you, Derric Atzrott