Your memeberlist page offers the ability to sort by several catagories (location, username, etc.), but if you try to view any other page except the first one after you sort, the page defaults back to Joined Date. I though it was problem with your query string. You have http://www.wrongplanet.net/members.html&mode=username&order=ASC&start=100. It should be a ? instead of a $. Then I tried to hack the query string (sorry, I won't do it again if you don't want me to) to get the correct results and it still didn't work. Just thought I'd let you know.