The Simon Wiesenthal Centre, a Nazi-hunting organization, told a United Nations-sponsored conference in Geneva that there are now more than 600 racist sites on the World Wide Web, up from 300 last year.
Among this group are 35 right-wing U.S. "militia" sites, 94 advocating a racial hierarchy, 51 sites promoting terrorism and 35 white-supremacy sites.
The U.S. Anti-Defamation League counts 250 white-supremacy Web sites.