Are you using Google Adsense to monetize your blog or website ? Is your Adsense implementation effective enough to bring in more 
revenue than just pocket-money. If the answer is no, here are some optimization suggestions for you.
Invite friends to draw a heat map of your site
Invite some friends over coffee and ask them to explore your blog like the navigation bars, categories, search, etc. Sit when them to understand what areas on the site grabs their attention and what remain neglected. Also automatically record their mouse movements in background using a free software called Mouse Map. Google Adsense Tips for Maximizing Revenue at The Blog Herald