One of the most time-consuming aspects of running a great SEO campaign is keeping tabs where your website places across Google (international and domestic), Yahoo, and Microsoft. Aaron Wall of SEOBook, has unveiled a free Firefox extension dubbed Rank Checker which tracks rankings and allows users to check their progress (or slide) over time. A handy video tutorial, instructions for downloading, installing and using the tool, and of course information on the theory behind it all is available.

Other SEOBook Rank Checker Mentions from around the Web:

• Cool new Rank Checker by SEObook
• Aaron Wall Brings Open Source Ranking Checker