Obviously, I can't stop you from linking to any page on Gumbyware from any site out there.
I can, however, configure the server to perform referrer-based redirects.
This server lives on the narrow end of an ADSL connection, so please don't link to it from any sites likely to generate large amounts of traffic. If you do, people clicking on your links may find themselves unexpectedly looking at goatse.
Feel free to post links on low-traffic sites, especially if their readers might actually find something here to be of interest.