Very useful, one little problem... Rated 4 out of 5 stars
Love the addon, works great in FF12.0 but for one problem—when I left- or right-click on the last headline in a feed, InfoRSS does not advance to the next feed. If I close the last headline of a feed using its close button, it automatically advances as it should. This wasn't a problem in previous versions, but other than that, love being able to see the RSS ticker in the Add-on bar.
About the only thing I'd like is that you change the right click to when you release the mouse button instead of when you press it, as the right click currently closes the last headline, which collapses the headline area, and then on release of the mouse button, the add-on bar context menu appears. If InfoRSS is set to not collapse the headline area the context menu does not appear after the last headline is right-clicked. Changing it would hopefully stop the context menu from appearing when collapse headline area is set on.