I've started evaluating online advertising campaigns last week, presenting the "good example" of Orange. Today I come up with a bad example: Nissan Micra advertising on Yahoo!.
I've found the ad while browsing on the "Motori" (Motors) section, looking for the new Toyota Rav 4. First of all, targeting wasn't perfect, since I was currently gathering information on a much different kind of vehicle, a more expensive SUV. But the worst thing was about how the ad looked like: I've taken two screenshots of it on two different pages (1 - 2) and, as you can see, the ad was badly cut and it was impossible to read the copy and the car name.