Leeching question

What is the best way of stopping leeching off forums and static websites.

I have some pictures that I want shared between several web sites plus my forum on the same IP but they are on different urls.

So say my weather station information is displayed on one url, but the live display then used in my sig on the forum.

Then several pictures from my gun collection are displayed on my forum and used on a shooting web site

Thanks in advance for any help

if they are images (or another simple content) the best thing to do is to just us an htaccess protector of some sort

ie

Code:

RewriteEngine On
                    RewriteCond %{HTTP_REFERER} ^http://(.+\.)?myspace\.com/ [NC,OR]
                    RewriteCond %{HTTP_REFERER} ^http://(.+\.)?blogspot\.com/ [NC,OR]
                    RewriteCond %{HTTP_REFERER} ^http://(.+\.)?livejournal\.com/ [NC]
                    RewriteRule .*\.(jpe?g|gif|bmp|png)$ /images/nohotlink.jpe [L]

will show the nohotlink jpeg when the request to an image is from anything other than those URL's

Thanks for that Brian