Good news for Microsoft: Its Surface revenues have rebounded from last quarter's slump, when sales fell 26 percent over the previous year. For the fourth quarter, Microsoft reports that Surface sales only fell 2 percent year-over-year. Sure, decreases aren't generally good, but in this case it's a sign that sales have actually picked back up. It's not a huge surprise why: Microsoft revealed the Surface Laptop and Surface Pro in June. Even though they arrived during the tail-end of the quarter, they likely added a bit to the company's ledger. Overall, Microsoft reported revenues of $23.3 billion for the fourth quarter, a 13 percent increase over last year, and it also doubled its profits, reaching $6.5 billion.