Evaluating Your Links

Analyze and check quality of your pages
Free online service from Ottawa-based Watchfire that lets you test single pages of web content for quality, accessibility, and privacy issues. Enter a URL in a search box and see how many outgoing links it contains, how many broken links, how many spelling mistakes, etc. A nice tool!
 
Analyze your links - NEW!
A great free tool to see how many pages are linked to you, how many links to others, how many pages indexed by Google. Also this back link checker is pretty accurate: http://www.iwebtool.com/backlink_checker?
 
Measure link popularity one search engine at a time
A free service that lets your measure page popularity. Simply type your domain name and see what sites are pointing at you.
 
Google's webmaster portal
An absolute must read for everyone. Note that Google offers great features to help you analyze your own site (how many internal links, external link, page rank, crawl problems, etc.), if you verify that you are, indeed, the owner of the site. To do that, all you need is to copy and paste on your home page a verify meta tag Google will generate for you. Highly recommended!

Compare your site's popularity with other sites
This site lets you compare the popularity of your site (measured in number of links) against three other sites, or verify how effective your chosen keyword combination is.

 
Check your links and indexed pages directly with Google.
If you are not a tool person, simply Google the required information by using a few formulas shown in the 'result' column.