I have a small network of blogs around 7 in total and i earn around $150 a month i have used various wp plugins for adsense and have tried different ad formats on the site side ads 250/250 in middle of post and other formats colours, i have tried making colours so they stand out and also blending colours, i get quite alot of traffic monthly around 4000 hits a month variable and my content is updated daily, my niches are also quite alot in variation i try to cover whats popular and whats not different keywords sometimes make more hits but apart from this my earnings have not grown in the last 3 months, i do not have alot of ads on my site only 3 on posts and 3 on main page if anyone has any tips about ad placement or ad formats colours etc it would be appreciated thank you for reading my post
Here I will come with some tips: -Content is very important! -Ad placement is also important, so your readers click on the ads. -Ad color -SEO is also a bit important.
What is your CTR and earning per click? may be you have maxed out for the traffic you receive. You need to concentrate on getting more traffic.
Focus on driving more targeted traffic to your website. The money this traffic will give you will be more than what Adsense can actually give. ^ ^