$cutoff = sprintf("notice_tag.created > '%s'",
common_sql_date(time() - common_config('tag', 'cutoff')));
$tags->selectAdd($calc . ' as weight');
$cutoff = sprintf("notice_tag.created > '%s'",
common_sql_date(time() - common_config('tag', 'cutoff')));
$tags->selectAdd($calc . ' as weight');