Palm shares fell yesterday amid speculation Verizon Wireless may drop its Pre Plus and Pixi Plus smartphones, sales of which have disappointed many on Wall Street. Dow Jones Newswires notes that the buzz started after Canaccord Adams analyst Peter Misek told his firm’s salesforce Verizon Wireless was “evaluating the potential for destocking,” industry jargon for dropping a product from the store shelves. Misek cited conversations with Verizon Wireless officials.