The requirements differ for each position. Moderators must be at least 18 years old and have a relatively clean site track record, and we also look for people who have been on the site for a minimum of one year. The Project Staff group has a minimum age requirement of 15 years, and we look for creative/artistic people who have participated in past site events so they have an idea of how we run things. The administrator position is somewhat different and I can say with near 100% certainty that Jeremy won't want to add another admin anytime in the foreseeable future.
You'd be welcome to apply if and when we open applications, but as of right now we aren't looking for new staff and I don't know when that would change.