Lots of content, What's best AdSense-wise?

Lots of content, What's best AdSense-wise?: "If I see a LOOONNNGG page of nothing but text, I may not be interested in reading it, but if the bold H tags paint a good overall picture, I can use them to jump to parts I like. also the images give it a warmer, friendlier 'read me' feel to it. "