Frankly, we'd advise against crossing anyone given to costumed superheroics, but a policy is a policy. Book selling giant Barnes & Noble has begun pulling select DC Comics from store shelves this week, in response to a deal struck between the publisher and Amazon, which will make digital copies of a number of comics exclusively available through the online retailer for use with the forthcoming Kindle Fire. The move is part of Barnes & Noble's policy to remove physical books from its shelves if the available digital version of the text is not offered up to the company. According to an exec, "
