I know how to figure it out...

Go to the member list.
click on the join date up top. Make sure that the list starts out with LaMonster, and his join date.
Your join date is in your profile; scroll down through the pages until your find yourself.
Take the page count, figure out how members are on each page, and then add in the leftover members who are ahead of you on your page.
Total all of this up... :shocked:
Voila! :thumbup: