Groupon’s staff turnover, increased investments, competition and slowing sales are reasons for lowered expectations for the daily-deals company’s revenue, according to Edward Woo, senior research analyst at Ascendiant Capital Markets. Woo said Groupon’s near-term earnings might be weighed down by its investments in Breadcrumb and Savored, along with its introduction of Groupon Payments. He also said staff turnover might open the door for “near-term business disruptions,” and noted that the daily-deals industry has seen its sales slow down 10 percent in the third quarter compared with the second quarter. Groupon will report its third-quarter earnings on Nov. 8. (Chicago Sun-Times)