I reckon that if such a ridiculous law were to come to pass, you could create a script that uses your browser to visit random sites and deep follow links found on those sites at constant pace all the time. This would generate so much noise in such a list that it would be prohibitively expensive to determine what sites you actually visited.<p>On top of generating noise to obfuscate signal, this approach generates reasonable doubt.<p>Needle meet haystack. Haystack meet needle.