You can download recordings of the debate in various formats from the Punkcast Web site.
The issues are important: It has always been policy that the registration information for Internet domains is public and publicly available through a database service called "Whois." Unix and Linux users typically have a Whois command line program that knows how to query the database.
Most Internet users, to the extent that they interact with the system at all, query through a Web-based proxy form, such as CompleteWhois (a good site with many other useful tools). If you do a lot of Whois-ing on Windows I recommend getting Jwhois for Windows.
Its also always been policy that owners of domains have to keep accurate information in their publicly accessible Whois entries. So if you own a domain for your personal use you have to have your address, phone number and an accessible e-mail in the record.
You really need to have an accessible e-mail address in that space because it is at that address you will be contacted if someone attempts to transfer your domain. That may also be the address at which your registrar will contact you if you when your registration is expiring.
But this policy also means that anyone can get this information for their own purposes.
If you put your e-mail address in Whois you will be spammed. Youre also likely to receive solicitations from other registrars, and theres a history of sleazy registrars making misleading solicitations.
For these and other reasons, many have called over the years for privacy for domain owners. But there are arguments against it and privacy advocates have the disadvantage of fighting the mighty status quo, which has home-field advantage in matters to do with ICANN (Internet Corporation for Assigned Names and Numbers.)