Ensure you cover all keyword possibilities with the keyword typo generator tool.

By entering a keyword or key term this tool will generate a list of suggestions for likely human misspellings and typos. All the results are based on the proximity of the characters on a QWERTY keyboard, and a database of common spelling/typo mistakes increasing the probability of them occurring.

Take for example: CHEESEMONGER (correct spelling by the way.)
The list of different spellings that were produced are as follows:

cehesemonger
cheesemongre
cheesemnoger
cheseemonger
chesemonger
dheesemonger
vheesemonger
xheesemonger
cneesemonger
cteesemonger
cgeesemonger
cbeesemonger
cheeeemonger
cheeaemonger
cheedemonger
cheewemonger
cheesenonger
cheesekonger
cheesejonger
cheeseminger
cheesemlnger
cheesempnger
cheesemomger
cheesemohger
cheesemobger
cheesemonrer
cheesemonner
cheesemonter
cheesemonher
cheesemongee
cheesemonget
cheesemongeg
cheesemongef

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.

This tool can tell you the relative important and visibility of a webpage, and how strong it’s page rank is in the search engines. This is a quick and easy to use tool that can lets webmasters see the importance of their site.

For those of us who don’t know what the various results mean, here is a brief explanation…

Links pointing to full URL- This is the number of links that are pointing to your page, but it is solely for that exact URL only.

Links pointing to domain - This is the number of links that are pointing to your entire domain.

Position at Google for the first four words of title tag - This is the position in the search results for the first four words of the HTML title tag on your page; it is a good indicator of how well your page is performing at the search engines for a term that is relatively unique and if you are not getting ranked your site may be suffering from a penalty, spidering issue, or is new and has not earned search engine “trust” yet.

Age of Domain – The older your site as indicated by this result then the more trusted it is and the higher the ranking it will get.

Links from domains with .edu TLDs, .gov TLDs – Having links from such sites will increase the value of your site.

Alexa Rank - Alexa assigns a score to every website that is an indication of its popularity. This score is compiled from an analysis of the Web usage of millions of Alexa Toolbar users. Although somewhat unreliable in many sectors, the Alexa rank is the most reliable when comparing websites is similar sectors. For example: comparing the Alexa rank of a website about web design versus a site about kittens would not be an accurate comparison. However, comparing the Alexa rank of a website about web design versus a site about web programming would be.

Domain name visibility – This is the number of results that are returned at Google for a search for “www.example.com.” (in quotes, the quote produces pages across the web that have mentioned www.example.com, rather than simply returning a list of pages that Google has indexed from www.example.com. This is a good measurement of how visible your domain is.

Internal link percent - This is the percent of pages on your domain that link to your target URL. For instance, lets suppose your target URL was www.example.com/my-page. The internal link percent would be the percentage of links on www.example.com that point to www.example.com/my-page. It is a way of measuring the importance of a URL on a domain. If the URL you are fetching a Page Strength report is for the homepage of your website the internal link percent is usually 100% because almost all pages link back to the homepage.

Technorati - Technorati is a blog search engine, this is the number of sites Technorati has found that are linking to your URL. Although weighted more toward blogs, Technorati counts links much quicker than Google and provides a better number of links initially than Google or Yahoo.

Google PageRank of full URL and Domain - Although inaccurate and infrequently updated, Google PageRank still offers some indication of the strength of a URL.

The Link Suggestion Tool will suggest suitable locations to obtain links related to your website.

Type in a keyword into the tool and they will produce a list of link locations, many of them being link or blog directories but it is still worth a try as if successful it will speed up the process of link building considerably.

Link Harvester is a link analysis tool that will, as the name suggests, analyse all the links going to any inputted URL.

This tool can be incredibly helpful when building links; it can not only let you see who is linking to you but it can be used to see what links are pointing to competitor website so you see where they are getting their links from etc.

Link Harvester Tool

This is a tool that sends out a Search Engine robot designed to visit our website to ensure that all your pages are being seen by Search Engine bot’s.

Once it has done all its stuff, it will show you how your page is being seen by the bots in the order that it is seen and will list all links on the page, organising them into the internal links, links restricted by robots.txt and link that are restricted by nofollow and external links.

The Crawl Test can tell you how accessible your site is to the search engines and will identify any problems with your site that may affect the crawling of it.

The tool spiders the URL entered along with the internal links; for each spidered URL, it will examine whether the page has been indexed, the last time Google spidered the page, the http status code, the primary keywords on the page, the pages meta description, and the number of internal links on each page.