There's some good news for restaurant owners this week: Sales seem to be rebounding, reaching a record $45.9 billion in April. Restaurant operators can find ways to minimize potential health care penalties in the Affordable Care Act’s fine print. Marketing experts say an Arizona restaurateur made a serious misstep in firing back at negative online reviews. Upstart chefs are tweaking barbecue’s venerable traditions. And restaurants are offering lower-calorie cocktails to cater to weight-conscious consumers.