Without the Web, these kinds of malicious groups could never achieve so much apparent validity. If we read a study in The New York Times, we take it much more seriously than one we read on photocopied paper from some guy at the airport. A lot of readers have raised this point. As the Web increases in size, this aspect will become more important than any other issue. And while it's true that The New York Times has some built-in credibility, there are plenty of newspapers used as source material that exemplify bad reporting.
Radio commentators make things up or distort the facts.
Getting things right has never been easy. To some extent, I think that the tonnage of inaccurate information on the Web and the contradictory information easily found will make people think more like critical researchers and work harder to determine the truth for themselves. Currently, Joe Citizen gets his news and information from radio, TV, and the daily newspaper. This sounds like a benefit, to me.