Rated 3 out of 5 stars
been using this ext. for quite a while (probably getting close to 2 years) and i like it - i think it's the best feed reader of them all by a wide margin and i've tried probably all of them. however, here's where i think it falls short:
1) it only checks one feed at a time, so if you have allot of feeds (i keep over 100) it can take quite a while if you refresh all.
2) you can have a directory structure of sorts, but you cannot create a directory within a directory.
3) adding/deleting/renaming folders and feeds is not as intuitive as it could be - i'd rather see a familiar file manager approach where you can create/delete/rename folders and feeds from the context menu.
4) unlike most extensions that force a new tab, this one doesn't.
really though, it's a pretty sweet extension. at first i didn't like the layout because it uses a tab instead of just the sidebar, but after using it a while i can see that the layout is perfect for a serious feed junkie.