Man, I never thought that running a little site like this would become such a pain! Even though I modified the site to not display referer links, the referer spammers are still pounding my site! I had one spammer who pounded my site over 5000 times over the weekend. This spammer caused the CPU usage on the server my site is running on to go too high. Because of this high CPU usage, my web host shut down my site (again!). Fortunately, I was able to isolate this to the fact that the spammer had been pounding my site, causing the increase in CPU usage. After I banned the spammer, my web host agreed to re-enable my site.
I really appreciate the understanding of my web host! Thanks guys!