I just want to add my two cents to the discussion. The truth of the matter is, everybody can be a moderator, though it is a good choice to appoint someone who knows the forum and the members. An active moderator, who is participating in discussions, is a plus imho. They are who people are turning to when a question arises, for changing topics, etc. On the other hand they could be a little biased towards others whom they got to know over the years. You get to know people over the years, and when they are a little aggressive, or getting carried away a little in a heated discussion, they would be likely to get away with it. Which speaks for 新米 or less active members, because they are not so emotionally involved in this whole forum-thing, but still capable to fulfill the functions asked from them.
2 to 3 moderators are a good choice from my point of view. The forum is chock-full of useful information that needs to be collected, centralized, and being brought into order. Which would be a nice side job for those moderators, besides the usual business of moderating forum-posts, handling complaints, answering questions and such. Which, if I got Fabrice right, isn't that much work because hardly anyone complains about anything around here. So, whoever it is going to be, I am sure they will make a great job. And if I were to suggest some people for the post as 守護天使 then CarolCG, puddingcat, nadiatims, and maybe, just maybe mezpub because he is a Kiwi. Which qualifies him the most, Kiwis are friendly creatures by nature, or so I've heard. ^^ And if it's not one of them getting assigned, then not. 