sub weight {
       my $age = shift;
       return $age / $FACTOR;
    }

##</code><code>##

     $score = $item->totalVotes() * weight($item->age());

##</code><code>##

    $score = 0;
    foreach $vote ($item->votes()) {
       $score += $vote->value() 
                 * weight($item->age() - $vote->age());
    }