The first step is to begin thinking in terms of search engine optimization (SEO). If you already have SEO in mind, than you would have researched all relevant keywords and phrases. Simply sprinkling the keywords in the text would not help. You must do this step accurately and thoroughly in order to make your website content search engine friendly.
Keywords density, the number of times the selected keywords and phrases must appear in the text, is important. Too little use of keywords and phrases or overuse of keywords (called keyword stuffing) is harmful for any website. Keywords must be intelligently used and must be meaningfully embedded with relevant keywords and phrases. You have to maintain the proportion and nest them in multiple variations to make the spiders crawl in order to be found by web visitors.
Yahoo, Bing and Google have set their own standards for the use of keywords in website content, articles and blogs to make them search engine friendly. While optimizing content for Google, one must make sure that the density of keywords and phrases is within 3% to 5% of the content. Any number above the recommended use of keywords may be considered as stuffing and website may be penalized.
With the recommended use of keywords and phrases, you can rest assured that your web content will bear fruitful results.