Iv'e actually wondered how the selection process for moderation happens. I kind of assumed you had to make it known that you wished to moderate a forum before you were offered the position of moderator. I'm not aware how one would go about doing that though.

When I was an assistant moderator I was voted in (fun times). I did of course volunteer before hand. Unfortunately my replacement isn't, errrrr, with us any more, but the whole voting for the assistant moderator was specific to the time and the type of forum I was assistant moderating. Again, still no idea how moderators emerge.