Web credibility is its usability, the quest for designs that are easy to corporate, makes our lives easier and simultaneously becomes important to Search Engines. The credibility of the website depends on the functionality and simplicity of navigation, how the interpretation of colors, font size and design rally to enhance a user experience without distracting the user. But navigation has an unswerving effect on how search engines crawl a website, and index it consequently.

Navigation is often overlooked but it plays a crucial role in getting site visitors to view more than just the home page from the moment the visitor enters the site to the moment they leave. If navigation choices are ambiguous, visitors may prefer to hit the "Back" button. Maintaining an easy navigation for a web site is not an easy task. Once the visitor enters, the real challenge begins, as it an uphill chore to let first-time visitors to get take maximum advantage of a site. Navigation is such a tedious task make functional for everybody who will use your web site. The best navigation system is one that contains text links, anchor text, breadcrumb trail (derived from the Grimm’s fairy tale, Hansel and Gretel and offers shortcut links for users without using “Back” button). Text links and Anchor text should not be cloaked using JavaScript or other undecipherable code because cloaking won’t allow a search engine to follow your navigation system. From the SEO standpoint they provide another opportunity for you to include your keywords. The titles also help a search engine to determine the credibility of a site and hence they should not be misled either a search engine or a visitor.

Web metrics has made it apparent that web users like to visit sites that are easy to access and are not far away from the home page. Also the search engine are not liberated enough to crawl more than a couple directory levels deep. Here not even a great navigation structure and breadcrumbs would help you out.

The legibility of text, its size and color is another aspect of maintaining the site’s credibility. Also search engines give weight to text that is bigger. For both structural, navigational, and organization purposes, both for the site visitor and the search engines organizing web pages into sections is a good idea. Clean, sophisticated and uncluttered design web sites are usually visited and crawled the most.

Website Usability and SEO also relies on content positioning, site maps, and stats. A search engine scans the text left to right, top to bottom. Hence, the content at the top and left of the page is more imperative than the content positioned to the right and at the bottom of the page. A properly structured sitemap allows users find what they are looking for and it helps the search engines better index your entire site. If your website is having more than 50 links on a single page, it would be wise to break your sitemap into several pages, grouped under their specific category. Web metrics is an innovative way to identify where your visitors are going, or tend to go, and then you can streamline your site accordingly. You can get to know the preferences of your visitors and alter your navigation of those pages to make it easy for your visitors to get back to where they want to be.