The correct title of this page is joopieter. The first letter is capitalized due to technical restrictions.
joopieter was officially announced as hattrick's 500.000th user on 27th January 2005, and his guestbook was "spammed" with more than 7,000 messages in less than 24 hours. This gave him a sort of cult status and a place in the top-15 most bookmarked users.
He has one of the biggest guestbooks in Hattrick with over 12,000 messages.