Adam Gottlieb said
1 year, 2 months ago: From personal experience I’ve seen that success with AdSense really depends on the content of your site as well as the reasons people are visiting it. If you are offering content that solves concrete problems or answers questions, then chances are you can generate a decent revenue from well placed AdSense ads- Google does a good job of targeting them to your readers. (If you have consistent search traffic, then that may be another indicator of your site’s ability to generate AdSense revenue)
Sites that may not do so well with AdSense are typically entertainment-based or are not well defined in terms of content.