Speaking as a wannabe ex--Google Reader user:

1. `N` doesn't move me onto the next item.

2. There are icons at the top --- X, Q, etc --- and I don't know what they mean. I expect there to be mouseover text explaining what they do, but there isn't.

3. It's a bit slow (admittedly this is with Firefox 3.6 on a netbook).

4. "FlowFS, a Feed Reader to Keep Your Inbox Clean" --- When I hear "inbox" I think of my e-mail inbox, and "[keeping my] inbox clean" means (to me) getting down to zero e-mails in my inbox and staying there. But FlowFS is a feed reader, not an e-mail client, so I don't know what the sentence is supposed to mean.