Historically I've been handling these tasks, but sometimes I have other commitments and take a while to clear the backlog (cleared now). It'll be good to have at least one other person who feels responsible, but there have been no regular editors on LW wiki for a long time, and it's difficult to judge based on activity in different modes. On the other hand, there is probably little point in the judging, since everything is reversible, including the adminship.
(So far as I can see, we didn't have too much of an unattended spam infestation, and given that there are usually no repeated postings by the same spammer accounts, clearing out the pages works just as well as anything else. Banning by IP once led to preventing access to a normal user, so I don't do that anymore, and the spam under current captcha is rare enough. One note though: there is no need to rename the pages, this only creates an additional alias, and it's all clear from the log anyway.)
A note of thanks to you, Vladimir. You're doing a great job, and I'm sure I'm not the only one who appreciates it.
(This reads a little stiff - Australian males are not well trained in gratitude - but it's heartfelt. Thanks.)
So, as people have probably noticed, there's fairly regular vandalism on the LW wiki which has been taking a while to address and which regular users have been trying to cope with by moving and blanking pages. This is a little silly - it doesn't resolve the problem and just generates more noise in the RSS feed for Recent Changes (to which I've long subscribed).
We need more administrators.
I suggest myself. I'm a longtime LWer with high karma, so I can't be too crazy. More to the point, I currently handle vandalism as an administrator on the Haskell wiki and have done so ~July 2010; I was formerly an administrator on the English Wikipedia (where I have been a contributor since ~2005); nor have I abused access that has been given to me elsewhere (eg. my shell account on http://community.haskell.org, the commit bit on the PredictionBook.com repo, etc.). In general, I think of myself as a wiki-savvy and trustworthy guy.
Administrators are created by bureaucrats; there are currently 3. Rather than simply message Yudkowsky or Matt of Trike, I thought I'd make my request public along the line of Wikipedia's Requests for Adminship.
If people object, please leave comments; if there are any other users who would like to be admins (David Gerard comes to mind as someone I know from Wikipedia and would trust as a LW wiki admin), likewise.