This is the way it works: The default is A-Z when the subscriber to the top positions (1 spot left) appear first. Then when you click on the name to sort it, it sorts the list from Z-A (again the top of the list subscriber will appear first) hope it makes sense
That is the way it looks now, not sure if that was the way it was at first. It must have been those first few paid links that confuse people. The page is still broken in IE6, btw.