Back in 2007, Viacom’s digital revenue was calculated at $500 million. Now prez/COO Philippe Dauman refuses to put a number on that New Media biz. “We don’t break it out because it is an integral part of our brands,” he said at the McGraw-Hill Media Summit Wednesday. He did admit Viacom runs about 300 separate websites, some related to Comedy Central, or MTV, or specific shows or concepts, and noted revenue was increasingly driven by its individual brands, rather than simply from ad sales. Dauman also emphasized that Viacom was committed to making its content available on whatever platform consumers wanted to find it.