As far as each user is able to build her own Semantic Web site, chances are that information could be presented as a resource for some interests while being pornography, commercial nonsense, and the things we're getting used in W1.0 and W2.0.

Would Viagra be the item returned when I query the Semantic Web for any useful information? I'm afraid spammers are to find their way in Semantic Web as they have in HTML web.