Despite "Gangnam Style" having over two billion views, hosting countless other viral clips and netting over a billion users per-month, YouTube can't seem to turn a profit. How's that? Well, after paying for the infrastructure that makes Google's video empire possible (and its content partners), The Wall Street Journal says that YouTube didn't contribute to Mountain View's earnings. The culprit, apparently, is that most users arrive at videos via links, rather than daily visits to the YouTube homepage where Google could charge a premium for ads. WSJ also reports that the site's reach isn't very wide either, with one source's estimate that nine percent of viewers account for a whopping 85 percent of online-video views. That makes it a much less appealing audience for advertisers than traditional TV programming, despite the outfit's increasing investment in original content.