this has been discussed many times, but ill go over it again.

you become unmoderated when a moderator unmoderates you.

each moderator unmoderates on different items, some unmoderated after "X" # of months, other on number of posts etc.

and "but sometimes by the time my post goes through so much time has gone by my post is irrelevant. "

is somewhat incorrect, atleast on the atlanta board cause majority of the time i check the the atl board @least 3 times a day. only once in a while do i only check once a day. but even then when you post it states itll be approved within 24hrs. though as stated before most are done within 6-10hrs.