We use this keyword ranking tool (Download Rank Checker) at least a couple of times a day to check keyword rankings quickly.  In addition, we use the .CSV export to show the rankings to clients and potential clients.  The rankings are tracked for the Top 200 rankings in Google, Yahoo!, and MSN.

Additional features include the ability to set a preset list that will let you re-check at a later date as well as the history of the keyword preset lists.  Once a preset list is setup, you can schedule the Firefox extension to run at a set time…be sure to set you search interval to between 4-7 seconds so you are being ‘friendly’ to search engines.

Related posts:

1. Why is Keyword Research Critical To SEO?
2. What is KEI (Keyword Effectiveness Index)?