flippant answer—tptacek doesn&#x27;t &quot;copyright&quot; anything. in territories that recognize the Berne convetion of 1989, everything created that meats the standards for copyright is protected by copyright. you can&#x27;t &quot;copyright&quot; something—something either is, or isn&#x27;t protected by copyright. IANAL, but as tptacek&#x27;s comments are tangible forms of creative works, they are trivially protected by copyright<p>less flippant answer—because he&#x27;s probably had problems with people stealing his answers and posting them on other forums or similar issues.