One that advocates violence against a significant percentage of the population of the United States of America, for example?
There was just a thread on here that I read with a link to a Fascist Fucknut message board, which has since been deleted from DU, which was basically saying that all liberal and intellectual American citizens should be rounded up and shot. I did a whois on the domain name and it's registered in Atlanta, Georgia. No, it's not freerepublic.com, it's worse. Apparently it is populated by a group of wingnuts who were banned from FR for being too extreme in their pro-fascism pro-Bush views (hard to believe, I know).
I looked at the DHS website,
http://www.dhs.gov/ and they have all kinds of different categories for things like "so, you think you got ricin?" and "is there a brown person in your child's school?" and "do you know someone who committed bank fraud that you'd like to report?" but I can't find anything on there for reporting "is a website you know of inciting broad brush violence against other Americans?"
Yeah, yeah, I know... DHS is a fucking joke... I'm just wondering if any of you had any better ideas. Contact their ISP directly perhaps? What if the webmaster for the site runs it on his own ISP?