Contributors' Names

What determines the "order" of the list of contributors' names on the right hand side of this page? Just a question of idle curiosity.

I keep checking the list to see if Holice Turnbow is finally logged in as a member (he's emailed me that he's having troubles signing up) so I've noticed that sometimes my own name is high up on the list and sometimes it isn't but cannot figure out any reason for why a name moves up and down the list.

I'll be that Eric and Sue are pleased about the response they are getting to this change.

Judy