@hawkeye10,
Clearly new technology doesn't only benefit the miscreants and twisted among us, although there is evidence that new communication technology is often initially and most effectively exploited by the members of society who dwell in the shadows and darkness.
The Nazis made very effective use of the communication technologies of their day not because it better suited them or their message than it did proponents of democracy and tolerance, but because they were more driven and better organized to take advantage of it.
These same communication technologies could have been put to good use by those who ultimately opposed the Nazis, if they had recognized the threat early enough and organized around its opposition. By the time they did, the Nazis controlled the major means of mass communication within Germany.
Many of us, me included, don't believe the various hate sites on the Web represent a significant threat to our society or the world, but then I'm sure the same can be said of many who, early on, dismissed Adolph Hitler and his brownshirts.
The answer then, however, should not have been any different than it is today: Don't prohibit the twisted from using communication technology, use it to quickly and effectively to denounce their message and educate society.
The answer is not for one totalitarian body to stop a nascent one in its early tracks, or for one group of propagandists to better manipulate the truth than another, but for free people to be less complacent and more protective of their freedom by bringing attention to and countering with rational argument the message of the twisted.
Private websites that invite commentary from their users are free to exclude whatever comments they do not wish to publish, but this will not counter twisted messages, simply send them somewhere else. Better, I think, to allow such opinions to be expressed and then address them invidually or collectively with editorial opinion.