Better than Google Reader Rated 4 out of 5 stars
Ok, not really. But it did made me switch from Google Reader and made two other extensions superfluous: greader and gmail notifier. The experience
In my opinion, it's just a few things short of being perfect:
1. Keyboard shortcuts, or at least 'previous' and 'next' buttons;
2. Ability to delete all currently viewed items;
3. Option to show only unread items, even when viewing individual feeds;
4. Show only X items per page, but load the next X when the viewport starts reaching the end of the page.
Yes, I realize I am cloning GReader, but it's only because GReader is practically perfect. The reason why I switched is because Brief is very fast, supports authenticated feeds (gmail), doesn't kill my mouse's middle button's autoscrolling feature, and is really lightweight.
An answer and a clarification
Thanks for a detailed review!
1. Keyboard shortcuts are definitely planned.
2. You CAN show only unread items when viewing individual feeds, take a look at the drop-down menu in the upper-right corner.