A member of the SEO Book community wanted to add graphs to the Rank Checker extension. Please give Site Rank Reporter a try, and leave feedback below. I have alerted him to this thread and he is anxious for your feedback.

A couple tips...

The Rank Checker developer told me he just completed our first major update on the extension. From his email...

Google has been changing the code used to display their search results a number of times over the past couple days. We recently updated SEO for Firefox and Rank Checker. Both should work as of now, and if any more SERP changes happen we will try to update the extensions as soon as possible.

Summize is a conversational search engine which allows you to search Twitter in realtime. Useful for finding customer feedback even when people do not provide it directly to you. For example, I just found out that for some people the Rank Checker Firefox extension stopped working after the last update. So I just reverted the extension and am awaiting another update from the developer.

Posted by randfish

Going through SEOmoz's Indextools analytics recently, I noticed that while the popularity of tools like Linkscape & Trifecta have been growing rapidly, they're still not yet on par with our most popular tool, the Rank Checker: