Making a website for AdSense only
You are treading on dangerous ground when you make a website specifically for a high CTR rate in the adverts that are there. The problem with doing a website only for the adverts is that it might not have any specific content and this will result in Google having to guess what your page is about. It may guess wrong, and so the ads that it displays may not be relevant.
However, that is only one of the problems because you also need to make sure that you do not get any French or Spanish ads in your English website and this is done by avoiding putting in any French or Spanish characters in your text. If you do this the result could be that you land up with a few completely irrelevant ads in French or Spanish. Without a doubt the most important aspect of building a high quality website that gets visitors and a high ranking on search engines is keyword selection.
The trick is to find keywords that are high in demand and short in supply. Obviously this is a constantly changing thing and it all revolves around the research you are prepared to do. Doing the correct keyword research is going to be worth your while in the long run, no matter how much time it may take you to do the research correctly. If you are already using AdSense then you will be very aware of all the added benefits that you can get when you are using AdSense. From the AdSense Log which is a tool for checking and analyzing your Adsense ads data (Content, Search, Custom/URL channels and Referrals), to Google Adwords Keyword Tool which is a useful bit of software that generates potential keywords for your ad campaign and reports their Google statistics, including search performance and seasonal trends. But these are only two of a whole range of different offers that you get for free from AdSense and Google. Obviously you need to use the Overture Keyword Tool when starting your keyword research as this software will suggest a keyword bid amount and keyword suggestions, which will help you target high paying keywords.
You should do yourself a favor and slow down on the free stuff that you offer on your website because the majority of websites are simply not getting the CTR that free stuff used to get ten years ago. The result is that if you have a website on something that is of a specific interest like asbestos-related cancer you will earn much more per click than if you just had free stuff you are giving away. One of the many great advantages of working with any AdSense software is that it was specifically designed by the experts in order to help you improve your own CTR. For example the AdSense Deluxe which helps you by offering advanced options for managing the automatic insertion of Google AdSense or Yahoo Publisher Network (YPN) ads to your WordPress posts. But you will find that there are many other advantages of working with WordPress and AdSense together.