Page Indexing and Clean Coding According to Search Guidelines
According to SEO guidelines when a search engine crawls a particular site it processes each of the pages it crawls in order to compile a massive index of all the words it sees and where they are located on each of the pages. Also search engines will process information included in key content tags and attributes, such as title tags and ALT attributes. Search bots process many, but not all, content types. For example, they cannot process the content of some rich media files or dynamic pages. How search engines display search results, when a user enters a query, search machines search the index for matching pages and returns the results that they believe are the most relevant to the user.
Relevancy is determined by Google by over 200 factors, the most important one being Page Rank is the measure of the importance of a page based on incoming links from other pages. Basically each link to a page on your website from another site adds to your site's page rank. Not all links are created equal and so Google works hard to improve the users experience by identifying links that are considered spam links which are links that are purchased from a link farm or generated from a linking program. both of which are of no value to your page ranking. The best types of links are those that are given based on the quality of your websites content.
In order for your site to be ranked well in search results pages, it is important and search engines will stress "important" to make sure that bots can crawl and index you web pages correctly and this means having your website's coding be Crystal clean. At Nexonta we pay close attention to coding details since this can be the difference between your site's pages being indexed by Google or not we make sure that your code is laid out exactly how search bots like it and that it can be easily crawled. This is essential to having a site which performs well in the search engines or not.
W3C Markup Validation Service
This site takes a web page and analyzes the code, checking for errors and broken links.
Google AdWords: Keyword Tool
This is tool allows you to see search volume for a given set of keywords (according to Google)
Yahoo Site Explorer
This tool allows you to see how many pages of your site have been indexed by Yahoo.