Very Good Add On. A+ Rated 4 out of 5 stars

Very good AddOn. Very intuitive and up to par with most basic RSS/Feed readers out there.

As far as I saw from my use there were no bugs it worked smoothly. It worked seamlessly with FF3 bookmarks by allowing you to bookmark the article/post right there on the Brief interface (a very nice touch!) letting you bookmark, Add to folder, and add tags however It was lacking a features that some online/readers have Specifically Google's:
*The ability to e-mail (or forward the article/post). Its not as big a deal for some. Plus it would require an e-mail registration which might be a drag.

In fact the only real reason for me not using this add on is that I get most of my RSS reading done at work which is a public computer so, every one could have access to my feeds and this works off of your firefox bookmarks.
Overall a great add on though.

This review is for a previous version of the add-on (1.2).