Simply the best Rated 5 out of 5 stars
I'd have to say this is the best browser-based feed reader I've ever tried, after a few years of using desktop ones. I only have a few one minor issue with it, that links are opened in another tab without automatically switching me over to the new tab. Aside from that, it does pretty much everything that I would expect out of a desktop feed reader.
EDIT: To clarify, I should say that this is the *only* browser-based feed reader that I've liked so far.