.:Computer Defense:.

RSnake has an interesting post on the Whois Daemon that is running for the .to TLD. It seems as though their modified daemon returns minimal results... masking all contact and registration information.

root:# whois tonic.to
Tonic whoisd V1.0
tonic
root:# whois task.to
Tonic whoisd V1.0
task    ns1.perpetualconnections.com    64.90.96.130    ns2.perpetualconnections.com    64.90.96.230

As RSnake points out this is a spammers dream.  I would add that the same is true for phishers.