Twin or XOR, or one of their assorted alts, are the people to contact on the muck if you've lost your password. In case of extremely dire emergency, you can e-mail Twin: peganthyrus at rdwarf dot com.
If you see something in the wiki that you feel should not be there, then feel free to edit it out. Use the 'view other revisions' link at the bottom of the page to browse through old versions and find out who added any particular content.
If anyone with the automation skills would like to maintain a remote backup of the wiki's data in case of disaster, please e-mail Twin and (she)'ll point you in the right direction. At present the backup policy only matches that of the website's host in general.
Have fun, and be nice!