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keyword density can be used as a factor in determining whether a web page is relevant to a specified keyword or keyword phrase.


Tips:
1. the optimum keyword density to be 1.0% - 3.0%. Using a keyword more than that could be considered search spam.
2. overuse of keywords, a practice called keyword stuffing, will cause a web page to be penalized.

Ensure your page content text can be read and understood by most of your site visitors. not too difficult nor too simple.

Tips:
1. a score below 30, indicates the text content is too difficult to be read and understood.
2. a sore above 80, may suggest that the site is lack of in-depth and expertise of its topics (low quality content).
3. an optimal reading level score shall be 50-70.

Sitemap helps search engine crawler to identify your website pages.

Tips:
1. ensure all your important pages are listed in the sitemap.
2. ensure to indicate the frequency of change and importance of each url.
3. inform search engines of the location/URL of your sitemap (eg, For Google, you can set the website sitemap location through Google Webmaster management panel).

It is a good practice to move inline CSS rules into an external CSS file in order to make your page lighter and increasing the text to code ratio.

Tips:
1. move inline css rules to external css file.
2. separate style from html.

nested tables could slow down page rendering and lead to bad user experience.

Tips:
1. avoiding <table> for your page layout.
2. using <div> instead of <table>.

Search Engines treat URLs with or without "www" as two different records.

Tips:
1. edit your .htaccess file and permanently redirect one to the other (eg redirect www.mysite.com to mysite.com).

clean, short and relevant URLs are favoured by users and search engines

Tips:
1. use url rewrite to turn dynamic pages with query parameters into seo friendly static pages.
2. put your important keywords in the url.
3. good urls are not only user friendly but also seo friendly.

reasonable number of links (below 100) per page will give a better user experience.


Tips:
1. keep the number of links per page below 100.
2. having more than 100 links in a single page will lead to a bad user experience, and it possibly runs into the risk of been considered as spam.
3. search engines may not follow all the links if you have too many of them in a single page.

put scripts together and link them from an external files rather then put them in the same file as the main page.

Tips:
1. reduce the use of in-page scripts, put them in separate files and link them in.
2. reduce the number of external script files, it will help browser to make lesser number of http requests from the server.
3. optimize or compress the script files to have smaller size and faster loading.

Users are concerned about the safety of their online transactions. Trustworthiness rating is based on real user ratings and that tells you how much other users trust this site, so do the serch engines. note: this trustworthiness score is provided by WOT (Web of Trust).

Tips:
1. pay attention to the look and design of your site, many people look for visual cues when assessing a site`s credibility
2. make your site easy to use, sites that are easy to navigate are perceived as being more trustworthy.
3. make it easy for user to contact you, users will be more comfortable and feel more secured shall they need to get in touch with you.