SheerSEO might have a funny name but it certainly seems to be very useful! 🙂
What it does is checks and reports your search positions for your most wanted keywords. Because it is automated (and currently free!) you can save a lot of time, time that you can put towards improving those rankings.
The site allows you to add up to 200 keywords to check for your site ranking: The interface to add the words is straight forward to use. The current number of keywords sheerseo tracks is 200 but I am sure they will be expanding this in the future.
Which SEO software do you use?