I guess this is as good a place as any to see just how well your htaccess file is working.
This site is hotlinking pics from thousands of domains, including some freehosts.
http://www.9001.com
Look at your server stats for this domain or visit the site.
If you visit the site then remember that each time you click for a new page, a redirect page will appear, so just wait until it redirects to next gallery.