Just a thought: many of the IP addresses that matter are highly static - much more so than their DNS TTL would suggest. Why don't we start posting our important IP addresses (especially those for the nameservers we run) as a footnote to all those "contact_us.html" web pages? That way, in the event of DNS DoS or legal attacks, savvy folk who really want to reach us can turn to the search engine caches or the Internet Wayback Machine (http://www.archive.org).
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