Street Fight Daily: Groupon Replaces CEO, Slack Partners with Lyft and Foursquare

A roundup of today’s big stories in hyperlocal publishing, marketing, commerce, and technology… Groupon Replaces CEO Eric Lefkofsky with COO Rich Williams (Recode)… Slack’s Newest Feature Lets You Call a Lyft (Fast Company)… The Artist Formerly Known as Ecommerce (Venture Inside)…