I always used to write out:
© 2013 NameOfCompany
until I realised I might as well write:
© <?php echo date("Y"); ?> NameOfCompany
Thanks to pHp, this will output the correct year (in 99.99% of cases)
Now it will always show the right year, I'm always a bit put off when a footer copyright says 2012 / 2011 / 2010 etc. It makes me think they haven't updated in a long time or maybe the company has gone bust or something.