To help you out in understanding SB and how mods come to be, let me try to outline how we attempt this now. Hopefully my mods will chime in if I leave something out.
A user is seen as either ultra helpful within the forums or as an obvious leader by a moderator. That mod can then decide to nominate that user to become a mod.
Then for several days, we discuss them at length, going over previous posts and any personal experiences. Diversity of culture and geography are big plusses. At some point the sponsoring mod calls a vote and those who are so inclined vote yay or nay. Sometimes the discussion is so lopsided one way or the other that we don't need to vote. If they are selected, the mod who has "sponsored" them gets the duties to make the announcements and inform our newest sucker, er moderator. BTW, we do remove the debate from the Mod area so our newest mods never know who, if any opposed their inclusion. We do learn from our mistooks.
I somehow always seem to nominate "lightening rods" like WreckWriter and others who get me in more trouble than not. But I don't feel that I have to surround myself with only "friends". Some probably thought I was just jerking their chain when I first asked them... like ROakey.
However, one of the quickest ways to avoid becoming a moderator is to ask to be one.
We would rather have those who are not seeking "power" and would probably not have an agenda. That does not mean that we won't entertain suggestions (PM please) from others who are helped by them. Currently, we are seeking more mods worldwide. The only requirement is a really thick skin and the ability to type "I didn't do it, I swear!"