I’ve been a mod on a small, now defunct website for female gamers. I was the admin for my guild board back when I led a guild in Everquest, and for over 2 years I was a mod on the official Everquest boards, so I’ve had experience on both large and small messageboards.
Here’s some things I wish I had known before I started modding.
You’ll need a thick skin. People get really irate when you move/lock/edit posts and threads that are against the board rules. You’ll probably get called every name in the book if you mod long enough, either through posts, emails, or private messaging.
Also keep in mind that when acting as a mod, you have no friends on the board. You have to make sure you’re not playing favorites with certain posters that you like, while making sure you’re not being extra hard on the posters you don’t like.
Know when to let the members bend the rules. Sometimes the best thing you can do as a mod is to do nothing at all.
Leave a short, concise reason why you edited/moved/locked a thread, with a link leading back to the post containing the rule being referenced. Nothing upsets people faster than seeing a mod take action, but not knowing what that action was.
Never quarrel with another mod where the general public can see it.
Always be polite when dealing with the posters when your mod hat is on.
If you’ve had to mod a thread, try not to participate in that thread as a regular poster too.
That’s all I can think of off the top of my head. I’ll post more if I come up with anything else.
As for things to ask before taking the position; what are the rules for mods? Who do you escalate problems to if you and another mod come in conflict over one another’s actions? Is there a private forum section set up for mods/admins to discuss things? Is your regular account flagged as a mod, or do you get a second account just for modding? Are you allowed to participate in a thread if you’ve beeing modding it, and vice versa?