<Snipped quote by hatakekuro>
Believe me, I've been trying to figure out one of those, but not had much luck.
I have an idea, although it will require quite a bit of time.
Make a blank doc and compile a list of every username and the name(s) of the characters that belong to them, then go one by one, checking last seen in ___minutes/hours/days/months/years or last post on profiles and add that information to them.
Now make a page that has columns, using google docs might work, although Microsoft word would be best, make three coloums: Active, Questionable, and Inactive.
Move the obviously abandoned profiles and characters into the Inactive column. Move the questionable ones into a that column. And lastly have the people you have seen post or you know are still active in Active column.
Check the active and questionable column for people who are not in the RP anymore, but may still be active on the site and move them into the inactive coloum. Also check the questionable column for people who have not posted in a while, but you are unsure if they quit or not. You can pm those people, but leave their names in the questionable column.
Easier said then done, I know. But, hey its an idea.