I just thought to share something that has helped me to increase my adsense earnings over the past months. Again, this is just my experience so please feel free to add your comments.
This realisation came about because I linked my adsense and my analytics during late July. I wished I had done it sooner!
When looking at the data, one thing that really stuck me is the range of payout that I was getting. Some were really low such (0.5>3 dollar range). I began to analyse the data and realise there were root words that can trigger the higher paying ads. I began to use more of these root words and then magic! I began to get the higher ads.
Normally, I would target something like tummy tuck. The traffic is high and the payout is decent but it was not the highest paying keywords. I then realise by adding roots words such as price + location (imaginary example, NOT REAL), the higher paying ads begin to come. So something like:
tummy tuck cost in London
cheap tummy tuck prices
I noted down all the different root word combination and analyse which combination can yield the highest paying ads. I then use these combinations in my post titles and find that not only do they trigger better paying ads but they are easier to rank as well. This is how my income jumped even though there was little movements in my main keywords.
Result: can you say USD12 click baby : )
I find that this approach works for every niche. I tried it in my furniture niche as well and find that I can raise the average paying click from the typical 0.5-0.8 range to my current 1.2-1.5 range, just by targeting the right root words.
All these targeting will raise your eCPM and makes it easier for you to earn more money without having large amounts of traffic. For example, an eCPM of USD20 will mean that you need 5000 visitors per day to cross the USD100 mark. If your eCPM is USD50, then you will need 2000. What we are doing then is sacrificing more traffic with higher paying traffic.