I sent this out to the users that registered with an email address on maiwiki:
Hiya! This is maiki, the one that runs this wiki. I recently found that the database has so many bot registrations, it is now 17GB! While we don't have an issue with spam in the articles, I did run out of hard drive space, so I am going to start over with a new wiki instance.
My plan is to migrate all the content over from this wiki to a new one, and turn off user registration. I will manually add folks to the wiki that wants to edit it, which has only been a handful of us, and that should take care of it.
I would also like to relicense everything under CC0 (http://creativecommons.org/about/cc0). The current wiki is CC-BY-SA. The reason is that most of the content on the wiki is created by me, and I want to dedicate it to the commons.
If you do not want your content relicensed with CC0, please let me know and I will remove your contributions from the new wiki. ^_^