I have read the 'copyright' notice at http://wordpress.org/about/domains/ but I don't see why end users should be responsible for contacting sites that infringe the policy. Surely the WP staff should do that.
It annoys me that sites like http://www.wordpressthemes.com/ can get a high Google ranking but yet are illegal. There must be loads of sites like that however and I don't see why WP users should have to police them.
Richard