Local deals discovery site Groupon has acquired Baltimore-based food delivery startup OrderUp for an undisclosed amount, the companies announced Thursday. Since the successful IPOs of Just Eat and Grubhub/Seamless over a year ago, food and grocery delivery has been one of the hottest startup spaces attracting VC investments. According to CB Insights. more than $1 billion was invested in 2014, with a further half a billion dollars invested in Q1 2015. New competitors keeps popping up in the sector, backed by restaurateurs or major tech companies, all competing to take over the local economy.