Groupon takes on OpenTable with 'Groupon Reserve,' bundles reservations with coupons

Not satisfied with simply locking down your discount mountain-climbing lessons and hot stone massages, Groupon announced Groupon Reserve this morning, which aims to bundle time-based discounts with restaurant reservations. Groupon's tapping Savored.com's reservation tech to handle the heavy-lifting behind the scenes -- the service is already live in 10 markets, including New York City and Los Angeles, and seemingly goes after OpenTable head-on. Of course, Groupon Reserve isn't quite the same ser...