I am a Mod at several other forums, it is a thankless job that is neither glamourous or fun, people react to you differently they will harass you frequently and everytime you attempt to do your job (locking or deleteing crap) you will be vilified by many.
I have found that the people who continually ask to become a mod are usually the worst people to be given additional responsibilty, some people treat it as a rank, a way of showing off online while others just plain abuse their powers deleting anything that doesnt go along with their viewpoints trust me, I've seen it happen at many other forums.
The truly helpful people that seem like they could handle a bit extra workload will get noticed eventually by 'the powers that be' untill then I would just suggest any budding moderators continue to post normally, dont spam and be helpful where they can, I'm sure that will help your chances better than making topics and asking about it a lot.
Also the Private Message system would be a more subdued way of communicating with mods I think.
? LOL
Bookmarks