, prices are zero - "free." On the other side of the market, Facebook's and Google's revenues are derived from advertising … advertised, - Increasing prices to consumers beyond the cost of advertising via the market power of the remaining firms in the …

This paper considers recent proposals for restricting keyword advertising using competitor brand names. Keyword … advertising is similar to many other widely used and valuable methods of marketing to the customers of rivals that increase … this type of informative and comparative advertising benefits consumers and, conversely, that restricting such advertising …