The Google AdWords team posted a photo help session, specifically to give tips on how to use the Google Content Network to the best of your ability.
AdWordsPro Sarah, the woman in the middle of the photo above, posted the details of the photo tips:
There is a lot to say about giving online help for this product, but to show a smile when doing it – well, that adds a lot. To see all the tips, go to the Picasa album.
Very creative AdWords team!
Forum discussion at Google AdWords Help.