Google has yet to find the key to making money with YouTube, despite the video site's huge user base and mainstream press name awareness, according to the Seattle Times.

Though there are banner ads on the site and the front page usually hosts a sponsored video, YouTube is still not a money maker for Google. Part of the reason is that Google's contextual ads, which have contributed so much to its revenue stream, are harder to pair up with user-generated videos.

YouTube also sells "brand channels" that allow marketers to upload their videos in a "safe" section of the site where they can control their videos' presentation.

YouTube has increased its traffic 40 percent since being acquired, but it has also brought a fair amount of controversy. Media companies such as Viacom have balked at having their content on the site and have sued for copyright infringement.