If a moderator has been inactive for over a year
how can he be a moderator? I'd make it a policy that requires moderators to visit (and maybe even moderate) at least once per quarter. Make a posting at least every 6-12 months, even if it is just to say "hi" on the introductions page to a new member.
This site is seriously neglected and way below it's potential. Even the owner has made only 8 posts since January 2009! I know it can be a lot of work. I'm certainly not volunteering to do a whole bunch of stuff, but I would promise to do something. If the owner sees this and would like me to be a moderator, or if any other person is interested in moderating and seeing even a little increase activity here, speak up. Seems like this is all of the sudden an industry people are interested in.