In fact, AdSense ads on sites with shitty content are even more likely to be effective, because users won't find what they're looking for in the page content.
Bingo. When our indie music site's stream server would go down, our adsense ctrs would skyrocket. The people who come from google go apeshit and start clicking anything--especially adsense units--when the content they were expecting isn't found or isn't functional.
