How to stop people stealing your images/bandwidth remotely:

(1) Make an image called dontsteal.gif and place it in a directory below the directory in which you are going to put the .htaccess file.

(2) Open notepad and copy this code … no hard carriage returns between lines.

RewriteEngine On
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://whateverdomain.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.whateverdomain.com/.*$ [NC]
RewriteRule .*\.(gif|GIF|jpg|JPG|zip|ZIP|png|PNG|swf|SWF)$ http://www.whateverdomain.com/dontsteal.gif [R,L]

(3) Change whateverdomain.com to whatever your domain is called.

(4) This code works with apache servers with mod_rewrite.