Antitrust Settlement Hits Barnes & Noble Shares - WSJ.com

Also see Apple Fires Back at the Feds, Amazon (AllThingsD)

"Barnes & Noble Inc. bore the brunt of Wednesday's antitrust settlement between the U.S. government and three major book publishers, losing 6.4% of its market value on Thursday alone and tumbling 17% this month.
Those market worries reflected the broad sentiment in the publishing world that Amazon.com Inc. is likely to emerge a far stronger competitor in the fast-growing e-book business now that it once again will be able to discount digital books by such best-selling authors as Mary Higgins Clark and Christopher Moore."

Antitrust Settlement Hits Barnes & Noble Shares - WSJ.com