We have had some confusion lately. There are a lot of people on the wiki staff who have been gone for a very long time. Yet they still hold their position? I have a method idea for determining inactive for the staff:
Step 1: Wait 1 month, and if they aren't back...
Step 2: If they have another wiki that they are active on, contact them there, and tell them they are inactive. Ask them if they would like to return and edit, or revoke their position.
Step 3: if they could not be contacted, wait 2 weeks. if they still aren't back, they will lose their position.
After all, we can't have people that don't even edit be in a powerful position.