Eliot means you need to add both variations like:
$LINKS{block_urls} = ['yahoo.com','geocities.com','sexshare.com','www.yahoo.com','www.geocities.com','www.sexshare.com'];
Paul Wilson.
new - http://www.wiredon.net
$LINKS{block_urls} = ['yahoo.com','geocities.com','sexshare.com','www.yahoo.com','www.geocities.com','www.sexshare.com'];
Paul Wilson.
new - http://www.wiredon.net