Interesting CommentThe two words that scare public companies most: short-seller. Shares of point-of-sale technology company Lightspeed Commerce tumbled after Spruce Point Capital – a New York firm that makes money by betting that stocks will fall – published a 125-page report questioning Lightspeed’s customer counts and revenue growth, among other things. Lightspeed said the report “contains numerous important inaccuracies and mischaracterizations,” but the company’s response failed to stem the stock’s slide. Shareholders can only hope Spruce Point is as wrong about Lightspeed as it was about Dollarama and Canadian Tire, both of which have posted double-digit gains since their own encounters with the short-selling outfit.