In theory, couldn't an interested party filter out the blocklist from the all other traffic? It would be more interesting to have a dynamic list that gets updated based on actual user behavior. That way, the interested party wouldn't be able to filter out the blocklist without potentially filtering out actual traffic. This of course would create all kinds of legal issues.
In theory yes, but everything hinges on the "given critical mass" thing - once a large amount of the sites the government would look askance at you for visiting are on the chaffbox's list and thefore being browsed by a large amount of people, it serves to protect someone who wants to view one of these sites legitimately.
A dynamic list would be better,granted, but a much harder nut to crack.
