Barnes & Noble bans aren't just for superheroes anymore. The bookseller let it be known this week that it will be pulling Amazon Publishing titles from the shelves of its 700-odd retail locations, in protest of exclusivity deals struck by the mega-online retailer. As one B&N exec told The New York Times, "Our decision is based on Amazon's continued push for exclusivity with publishers, agents and the authors they represent," adding, "Their actions have undermined the industry as a whole and have prevented millions of customers from having access to content." Barnes & Noble will apparently continue to sell some Amazon titles through its own site, but good luck using its WiFi.