What Is Google PageRank?

PageRank is a numerical value which represents the popularity of a website. This is status given to websites by www.google.com

What is the hightest Page Rank you can get?

PageRank is from 0 - 10, with 10 being the highest number awarded. For instance Google and Yahoo both have a pagerank of 10.

How is PageRank Used?

PageRank is a method that Google uses to determine a page's importance. Pagerank is important because it is one of the factors that determines a page's ranking in the search results. It isn't the only determing factor that Google uses to rank pages, but it is an important one.

Google pagerank explained by Google.

PageRank explained

Where can I find more information about pagerank?

Here is a good source of information about pagerank.

Keyword Verification
Our verification tool checks to see if your site is in the top three pages of a search engine result for a certain keyword. The reason we only check the top 3 pages is because most queries don't go past the 3rd page of search results.
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Search Engine Saturation
"Search Engine Saturation" simply refers to the number of pages a given search engine has in its index for your website domain. Check your Search Engine Saturation and compare your website to competitors. Check this information on a regular basis to see if your Search Engine Saturation is climbing or falling.
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Link Popularity Check
WebsiteTools4U.com has designed this link popularity tool to help search engine optimizers and online marketers to not only find out who is linking to your site, but to also run a benchmarking report to show you quickly where you stand in comparison to competitors and other major online players.