In a victory for online retailers, a New York federal court recently dismissed three putative class action lawsuits brought on behalf of website visitors whose mouse clicks, keystrokes, and electronic communications were tracked by a third-party marketing company. The cases were filed against three e-commerce retailers—Casper (a mattress manufacturer and retailer), Tyrwhitt (a men’s clothing company), and Moosejaw (an active outdoor retailer)—and against a marketing company named NaviStone. NaviStone offers computer code that allows e-commerce…