As much as Adwords is an incredible advertising delivery mechanism, it can only ever be as good as your advertising itself. In this video Youtube and TED asks the creators of some of the most popular viral videos of last year the question: "What makes ads worth spreading?"

Interesting Infographic from Wordstream on how the Adwords auction works.

If you’re interested in learning more, watch this youtube video with Google’s Chief Economist, Hal Varian.