|What to Do
-Place an ad above the fold
This area is much more visible to the readers of your blog, and have proven to be successful in getting a higher CTR for your ads. Also, place it in between content as well, readers will be able to chance upon it.
Blend ads colour the same as your background, but do NOT change the colour of the text, this will be violating against google TOS, read their terms and conditions carefully.
-Stay away from high ranking keywords
It's very hard getting ranked well from such keywords, keywords with lower ranking have a higher potential of increasing the amount of visitors and the clicks on their ads. Would you rather rank well in a keyword that has a CPC of $0.30, achieving about 40-50 clicks per day or ranking in a high ranking keyword that pays $2 per click and getting perhaps only 2-4 clicks per day if you're lucky enough? Think carefully!
-Use 300X250 ads
The size of these ads give readers more exposure of the ads detail, thus attracting them to want to click on it.
-Use hosted blogging platform
This could be apply for people who just started out making money from online and doesn't have much income to buy their own site. A blogger/wordpress blog is good enough for you to make money from blogging. Let's look at it. A standalone site with good content and a hosted blogging site with good content, aren't they websites with good content? Whatever blogging platform you have, as long as you have good content, readers will come to your site.
What Not to DO
-Do not click on your own ads
You will not earn any amount of money from doing this! Google is very strict in this area, never click on your own ads as this will be a violation against their TOS.
-Do not ask/pay people to click on your ads
This is another stupid way of "maximizing AdSense earnings". Google ads are suppose to be for readers of your blog/website to click on it if they interest them, not you paying them to click the ads for you.
-Placing ads all over the site
Never place more than three ad units and three link units on the same page, this will be against the AdSense TOS, and readers will obviously not be keen to click on it AT ALL!
If you follow carefully on my tips and work hard on promoting your site content, I could assure that you are slowly maximizing your AdSense earnings, it's also very important to identify what not to do while using google AdSense, because their policies are very strict and once you got your account banned, high chance is that you will never get them back!
-Formatting of ads
Do not format ads in such a way that they become indistinguishable from other content on that page or site content so that it is difficult to distinguish it from ads.