Contextual links are part of a huge strategy of link building and seo. Both are needed to raise page ranking and page views for your site and for increase traffic. While the two kind of links-editorial and contextual-consist of clickable text that drive you to another place, contextual links are important both in design and in destination. Basic information and suggestion in how to use contextual links that can improve your rankings and make your site more accessible to visitors. 
Reality : To know the concept of a contextual link, begin with seo- the act of making your site pages attractive to search engine crawlers. SEO adds tasks such as modifying web pages regularly, selecting the right keywords- words visitors are most likely to enter into a search engine and developing links to get a better spot on search engine pages and drive visitors to your site. Contextual links are keywords based links.
Description : In opposition to an editorial link, a destination based link over which you have little command, you completely control the development and placement of contextual links. While contextual links most often contains one or two keywords, you can make use of a phrase also that relates to a major idea, topic or the intention of your site as a contextual links. After developing a link, you also have command over its destination or whether it is an internal or external link.
Technique : Contextual links are most effective when you use them in the right context. Add contextual links as a natural part of a sentence, in the centre of a sentence and as the only link in the sentence. Consider relevance when developing external or outbound contextual link which need a strong relationship to the page with which you are connecting. Internal contextual link are particularly be helpful in linking the pages of your site, most often going from internal pages return to your home or root page.
Explanation : To explain the concept of a contextual link, make assumption that you have a four page website concentrating on internet marketing. Your main keyword is internet marketing and you want a page- one search engine ranking using this keyword. Select a sentence on every page – preferably close to the top of the page – that contains the word internet marketing and develop a hyperlink that links every page to your homepage. These are your internal contextual links. Select a sentence on your root page that adds the word internet marketing and connect it to other site that concentrates on internet marketing. This is your outbound contextual link.