One of these dangerous sites detailed in this article is martinlutherking.org, a site covertly linked to a white supremacist group. Another such site is the Kennewick Man news site. It doesn't fall under the category of a hoax site, but it certainly does teeter on the edge of being a hoax. The site itself does contain some discussion as to what the Kennewick Man's origins were, but the majority of discussion is over why ethnic cleansing is a viable option for the U.S. The information held in these sites are offensive yes, but they don't actually hurt you usually. What about sites that steal your money or spread a virus to your computer?
Following the events of September 11th, various charity aid sites popped into existence. Quite a few people have been duped by sites such as these. The article goes on to talk about various other forms of sites conveying misinformation. But possibly the most important parts of the article are the parts that inform you about how to combat these falsified sites.
When it comes to information that sounds outlandish or like an urban legend, your best bet is to go to snopes2.com and check to see if that subject has been researched by them. One technique is to actually look at the URL of the website to see if it has any clues to what kind of site it really is. If a site has ~ and a name after that, then it is a personal site. If it is a .org site and you were expecting .com, that can also be a bad sign. Research the domain name of the site if it appears to be suspicious. But probably the best tip is to see if there is a lot of bias towards a certain audience and the content the site holds. If the content sounds too outlandish, chances are it is.