ViacomCBS is in talks to sell CNet to Red Ventures, which owns a group of digital media businesses such as Bankrate and reviews.com, for $500 million, the Wall Street Journal reported. The sale, which had been expected, is part of an effort by CBSViacom to reduce its debt. CBS acquired CNet in 2008 for $1.8 billion, so the sale price is a huge reduction from the purchase price. But CNet, a free...