There is a new addon on the street and this one is a must get if you are a webmaster.
SEO Doctor for Firefox will turn you into an SEO in a matter of seconds. Through easy to use interface you will be able to quickly diagnose your site for problems and also check your competitor sites.
Once installed, SEO Doctor will become a part of your status bar and assign an SEO score to every page you visit. It also provides one-click access to some of the best free SEO tools available on the Internet today.