If you've never taken a look at this tool, it's more than worth a look. Here's a link to Chris's positive SearchDay review: GuruNet: A Handy Information Magnet.
Btw, in the past few months GuruNet has:
+ Released a desktop search beta
+ Launched a version of their client for the Mac
+ Launched a web-based version of their product. You can now access most of their content without having to download any software.
The Original Search Marketing Event is Back!
SES Denver (Oct 16) offers an intense day of learning all the critical aspects of search engine optimization (SEO) and paid search advertising (PPC). The mission of SES remains the same as it did from the start - to help you master being found on search engines. Early Bird rates available through Sept 12. Register today!