Rated 4 out of 5 stars

I have this set to open with new tabs; it's a great time saver even with FF3's awesome bar. I like all of the options that the developer has made available, such as when to update the thumbnails (I have sites like CNN update more frequently, and other sites less frequently).

A minor gripe, though: I'd like it if there were an easier way to rearrange the panels. I arrange them in a certain order based on content; when I add a new site, I'd like to be able to easily move around the sites.

This review is for a previous version of the add-on (0.7.2.5).