How many keywords need for a website?

I am a new player in this forum and i am also new in SEO & i too would be interested in knowing about the same...

well it depends on the number of contents.. 3%-4% is the most recommend number of KW.

Hi mate,
No of keywords will depends on your content,
For promoting prefer min of 6-8 high rated keywords depending on your website content.

it depends, maybe 2%-3%, maybe more, because there are different search engines in the world. dvd to mkv file

As such, there is no fixed keyword density. The idea is to use them in such a clever fashion that neither does it hinder readability or dilute the real message (as in the case of keyword stuffing), nor is it a case of under-utilization so that you don’t rank high on search results. A keyword density of 3-5% is usually supposed to be quite ideal.

I use maximum three keyword.

it's depand on your site worth and your expecting SEO result and you can target 3-4 keyword on a page

Concentrate on improving your web page ranking to begin with , then use google webmaster to see where you are appearing on google. You probably need keywords which are relavent to your product.

It has no limit. It totally depends on your content.