Just-released letters from Groupon (GRPN -5.9%) to the SEC highlights the firm's rationale for...

|By:, SA News Editor

Just-released letters from Groupon (GRPN -5.9%) to the SEC highlights the firm's rationale for CEO Andrew Mason's rallying memo to employees that was leaked to media sources. A tricky question for GRPN to answer was why an exec advised a news outlet to check out the "leaked" memo.