When making website or posting an article, it is important to know what keywords are you targetting. By targeting the right keyword, you can have more traffic. There are lots of Keyword Research Tool out there which will help you research appropriate words and phrases to include in your webpage’s body text to aid in promotion. The most popular one is Keyword Elite but it cost you a lot.
To research keyword for free, I use google adwords. There I can enter a keyword, and it will show you Estimated Average. CPC, and search volume. Estimated Average. CPC shows you average avertiser cost for a click of a keyword. Higher Estimated Avg. CPC means higher adsense revenue for a click on your website.