Let users link to your smilies on other boards?

[Erwin]

In .htaccess in the images folder, add these contents:

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://yourdomain.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.yourdomain.com/.*$ [NC]
RewriteRule .*\.(gif|GIF|jpg|JPG)$ - [F]

Change the domain name to your own. Placing it in just the images folder will make it work for all subfolders in there.