Palm chief Jon Rubinstein sent a memo (sub. required) to employees later on Thursday to explain how his company was tackling the unexpectedly low sales for its lineup. He revealed that the company has been using almost 200 "Brand Ambassadors" at Verizon for the past three weeks, along with its own staff, to increase awareness among Verizon workers. The executive claimed that both experience and actual phone sales have grown weekly since the initiative, nicknamed Project JumpStart, began.