Paul's article "What DNS Is Not" published in December's Issue of Communications of the ACM. Also ICANN publishes memorandum about Harms and Concerns Posed by NXDOMAIN Substitution: http://www.icann.org/en/topics/new-gtlds/nxdomain-substitution-harms-24nov09-en.pdf What needs to be done to have ISPs and other service providers stop tampering with DNS ? Cheers Jorge