Rated 4 out of 5 stars
This seems to work well on the sites I frequent. I wouldn't expect it to work on Google Reader. I could be wrong, but I don't know how that would even be possible.
The only thing that I think needs some work is the Twitter functionality. It just open my Twitter page in a new tab, even if I already have it open in another. It doesn't shorten the url either. Maybe a popup would be better.
But that doesn't detract from the Reader functionality, which works perfectly. Thanks!