Hi, How often a keyword or keyword phrase is used on a given web page it's called keyword density. Thanks Auctionwebsitescript
Use it as often you need it. Don't think in numbers when it comes to content, make it niche relevant and it will come together naturally. You have plenty of things to do math on when it comes to S.E.O. but content writing isn't one of them.
God damn it, lads! Forget about keyword density already! It does not matter. Again: It. Does. NOT. Matter. I can have a page with 0% density - that is, no keyword on a page at all - and still boost its rank with links. I can have a page with 100% density - that is, a page that has only one keyword in its body - and still boost the rank of that page with quality links. I can have just any value of keyword density from 0 to 100% and.... you got the idea Stop repeating "from 3 to 5%" bull**** - this is info is old as hell and is wrong. You're giving the wrong advice and also cheating yourself.
The bottom line is: If you're making an website without having anything to say, offer, you're as good a DEAD from the beginning.
There is much talk about the ideal keyword density of a web page. The bottomline here is that there is no thumb rule regarding the ideal keyword density in a website, mainly because the search engines change their algorithms frequently. Also, different search engines allow a different keyword density. So, while a more than 2% keyword density is considered spamming by Google, MSN and Yahoo allow a liberal 5% keyword density in a web page. While some search engines attach more importance to keywords in your title, meta tags and web copy, Google - the most important search engine, searches for keywords in your web page text. Also the ideal keyword density changes with the type of keywords. When the keyword is highly competitive, the website owner should focus on not more than one word per page. Pages with low competitive keywords should ideally focus upon two or three keywords per page. More often than not, search terms comprise of moderately competitive keywords. Such keywords must be used on the home page, and must be linked with internal supporting pages. Ideal keyword density is more of a range than a figure. A 1% - 7% keyword density is what any web page should aim for. A 1% keyword density is achieved by inserting a keyword once in every 100 words of text, and so on. But a keyword used once in every thousand words would mean a watered down keyword density, which, in turn, will mar the chances of your website figuring high in the search engine result pages. Keyword optimization For a search engine to rank your web site highly, focus on one or two keywords per page. This will allow the spiders to be convinced of the relevance of your page content to the keyword. Keeping a one-keyword-per-page policy is the best bet. Writing a minimum of 250 words creates enough content to naturally include a good keyword density. All this stuff about keyword density is effective in search engine optimization only for keywords that are less than highly competitive. Fiercely competitive keyword terms such as ‘Search Engine Optimization’ cannot assure a good ranking with search engines, even with keyword density as high as 60%. This goes on to show that search engines place more importance on other elements such as inbound links or anchor texts. To improve search engine ranking, your keyword density must not be too high or too low.
So much talk, so little truth... Search engines DO NOT consider keyword density anymore! Because this parameter is SOOO easily manipulated, that's simply doesn't makes sense to calculate it. Search engines (and especially Google) are not about keywords nowdays, they are about themes. They do not determine a theme of a page by counting the exact amount of some particular keyword and dividing it then to the overall number of keywords on a page. They consider the keyword itself, its synonyms, rounding keywords, keyword from other pages of a website that link and are linked from that particular page. They consider the theme of other websites linked by or linking to your website - not only the anchor text, but theme! I understand, why is everyone here so sticky to the keyword density. It is a quite simple parameter that is easy to comprehend even to a non-math person, and is also easy to implement on a page. But please do not say it as a "must-have" rule - use this or that keyword density and you'll be fine! That's wrong advice. A good advice (if you like the keyword density so much) would be - write text naturally, use any keywords you feel appropriate, THEN check for keyword density and DO NOT bother too much if it isn't in 1%-7% or 5%-12% or whatever, since there is no ideal value and there is no value that could bring your rankings down or raise them up. It is simply doesn't matter, if a text is written for humans.