It is common knowledge that having two pages with similar content will result in penalization from Google.

Content needs to be unique not only to other websites but it should not be duplicate to pages within your site. This tool analyzes the similarity between two pages.

Search Engines are known to penalize websites that contain Duplicate / Similar content. Your content could be similar to other websites on the Internet, or pages from within your own website could be similar to each other. This tool allows you to determine the percentage of similarity between two pages.

This Firefox plug in allows users to run a quick keyword search.

The tool suggests up to 100 different keywords and an estimate of their daily search volume.

For those of you who do not know what Page Rank is Google defines it as;

PageRank reflects our view of the importance of web pages by considering more than 500 million variables and 2 billion terms. Pages that we believe are important pages receive a higher PageRank and are more likely to appear at the top of the search results.

PageRank also considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value. We have always taken a pragmatic approach to help improve search quality and create useful products, and our technology uses the collective intelligence of the web to determine a page’s importance.

To instantly see the page rank of every website as you visit it, download the Google Toolbar.

The Page Rank tool instantly tells you the page rank of any URL you enter. This tool will let you know how popular your own and competitors website’s are.

Find the Page Rank tool here.