Building your site's page rank will help you increase your position on the search engines. There are different measurements for page rank. Page Rank is a term initially developed by Google and refers to their algorithm measures link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote. The more votes the better but... Google looks at more than the amount of links, or receives; it also looks at the referring site's content, and the anchor text of the links. Also, pages with a higher page rank (more quality votes, more trusted, authority score tend to lend more weight and help with building page rank. There are many popoular measurement tools and there are different search engines with different measurements. We have compiled a list of free seo tools to check your site's Google Page Rank, Alexa Rank, MSN Page Rank, Yahoo Rank and other rank check tools. These tools will assist web masters who want to monitor, measure, and track a site's page rank and ensure that their sites are scoring high in search engine rankings.