We get an email that says "new anonymous question from user cortex, approve it here" with no other info about the question.
The emails, again, go in a folder but don't really get any eyeballs on them until such time as we specifically have a reason to look
I appreciate that this news may be unsettling to some people, but this is why we try to be crystal clear just how anonymous your question is
Anyone who reads AskMe regularly should know that the mods act as go-betweens for anonymous users. They post anonymous followup comments and occasionally talk about emailing the original poster for clarifications. It should be obvious from these actions that the mods can easily link anonymous questions back to the actual user. Did you think they had some double-blind automated anonymizer in the back-end? If so, you severely overestimate the sophistication of this thing we call Metafilter.