To become a mod, you have to have been bitten by one…
Seriously though, Auggie makes the call and ultimately only she knows what she wants in a mod, but I can say that how much lurve you have doesn’t figure into it. As for writing standards, It’s one of those “glass houses” situations: if you’re going to be calling people out on their spelling, punctuation and grammar, then you’d better not be posting a lot of counter-examples in your own comments.
My sense is that the most important assets for a mod have to do with character. Patience and diplomacy are crucial. You’ve got to be able, as far as humanly possible, to disregard your ideologies and personal friendships in enforcing the guidelines. You can’t be a hell-raiser either; no picking fights once you’re a mod, of course, but even before becoming a mod it would be best if you hadn’t already made a pack of enemies. So yeah, cool headedness. Overall, you don’t have to be everyone’s friend, but you need to be widely respected as a good Fluther citizen.
Oh, and a tough skin, for sure. Most of the work you do will be invisible to the members at large, and what they do see will be you deleting their comments or sending their questions back for editing. So you can expect more resentment than gratitude. And some people will always think you’re pursuing all kinds of nefarious machinations and indulging preferences, etc. You can’t take any of that personally.