silverbytes - 6:24 pm on Jun 25, 2009 (gmt 0)

I have hotlink protection allowing only certain sites to hotlink my images, however there is 3 or 4 sites (mostly forums or social networks) appearing in 404 error, mostly posts hot linking my images, what is annoying.
Is there anything else I can do to completely ban those?
Should I add an .htaccess line like

Deny from (IP)?