If any one knows please let me know, because I am working on one of the site of payroll software, but unable to understand whether to put many keywords or not?
Think on Google Penguin (Over-Optimization). Keyword spamming is one of the don't-do's. Make your articles for humans well-readable, mix with some LSI keywords and you are done....
Yes, Off Course keyword density is an important factor in SEO. We can use keywords in the content but we should not use keyword stuffing technique Google can consider as a spam website if use keywords many times in the content.
i totally agree with you,now we have to focus on LSI,because google analyze web pages on basis of LSI.We should put synonyms of keywords in our content.
I don't think so. But you should not include one keywords for over and over. It will be a boring topic then.
Keyword density is very relevant with the Panda Update. Because keyword stuffed sites have been loosen their SERP. So try to maintain the keyword density between 2% - 3%.