California passed a bill [ banning businesses from making customers agree not to post negative reviews ]( http://www.nationaljournal.com/tech/congress-fight-for-your-right-to-yelp-20140915 ) . One is proposed at the US level. I wonder whether these measures also cover the attempt to require customers to assign copyright on their reviews to the business.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#18_September_2014_%28Posting_negative_reviews_about_businesses%29