So many sites have an invalid date on their copyright notice, which makes them look out of date and neglected.

Make a better first impression with a footer block containing something like this super simple PHP:

  print "<div class=\"copyright\">&copy; YOUR COMPANY " . date("Y") . "</div>";
 

or, if you want it spanning from your company's inception date (say 2005):

  print "<div class=\"copyright\">&copy; YOUR COMPANY 2005 - " . date("Y") . "</div>";