Use of keywords may be a sensitive issue particularly if one wants to induce a rank with the employment of keywords. It should be used fastidiously and most significantly within the right amount. An excessive amount of use of keywords will spoil the name and ranking of a website. Itís advisable that a keyword having an extended tail should be used a lot frequently that the one that's rather short within the tail. Another very important purpose lies within the choice of keywords. It should be apt for the content that you are using. All these factors contribute towards a good use of keywords.
Use of keyword is old concept major search engine google now don't pay any attention to meta tag or keywords.... .Page rank now mainly depend upon the inbound links.
You can use keywords but try to maintain keyword density, try to keep it within 2%, it would help.