Are you open for DNS Cache Poisoning? Are your SERPs (Search Engine Results Pages) being redirected because an attacker has compromised your DNS and is now stealing your traffic? And possibly destroying your domain in the process?
Yes you are! A recent (2006-04-09) WebmasterWorld Home Page topic discussing how one's links in the SERPs have been hijacked and are being redirected to questionable websites proves that DNS Cache Poisoning is a severe threat to search engine marketers and website owners around the world.
Links Hijacked in Search Engines
We've got a section at the SEO Consultants Directory on the DNS Cache Poisoning and DNS Recursion issues here...
I think this is important enough to start spreading the word as rapidly as possible. Bloggers, forum moderators, administrators, etc. We need to get the word out there so the server administrators of the world can close this big gaping hole called DNS Recursion.