I know it doesn't sound like a very promising increase, but it has been for me. Hopefully some of you can learn from this experience, in particular those starting.
One year ago I created a website about an app video game. It contains guides about the game, reviews, etc. I was able to increase the traffic up to 300,000 page views per month. But my monetising strategy only relied on Adsense. Here are my Adsense income report since I started:
As the end of December I averaged around 5$ per day. Not bad for me back then, but I didn't know my website was having potential for a lot more.
Two weeks ago I applied to "The Blogger Network", they are an ad network which manage your ads in your website. One week later I was accepted and the ads were running. They only added an ad on the heather and few on the sidebar. Ads in the posts from Adsense were still there.
Now, one week later I an getting around $12 per day from The Blogger Network, plus 4$ from Adsense (it dropped a little bit because of the integration of the other ads). Every day I am getting more and more money from The Blogger Network, these guys are amazing!
If things keep like this, the estimated amount per month should be around $450!! Three times more than in December. I'm sooooo happy!!
I'm joining as well PadSquad most likely by the end of this week. I've been accepted in their program, and according to my pageviews it's estimated an increase in revenue of $300 to $500 per month. Incredible!!
With all of this I want to encourage you to keep trying new strategies, there is always a margin to improve and sometimes you will be surprise of what you can get!
Remember that your own limitations are limited by you!