Meena Avaptech Keyword Research is the most import key to online success, it doesn't matter if you are using Pay Per Click or Search Engine Optimization, without the proper knowledge of picking the right keywords, you can't build a successful online business.
yes keyword plays really important role dor adsense...your cpc depends on it...it can make huge difference in your earnings..high pay keyword pays you lot for single click..
Yes of course keyword research is key. Even without no research you can start to make good money with adsense but with a little research you can increase your earnings with the right keywords.