Seems to me that the interface could be fake-speeded up quite easily. Examples:

1) If I mark all articles in a feed as read, the interface seems to be waiting for a response from TOR's server. But that's not necessary from a user's (and usability) point of view. Just hide that feed and that feed's articles on the user's computer locally. THEN send a message to TOR's server.

2) Moving feeds seems to similarly be waiting for TOR server responses. Suggestion: Save all changes on the user's machine locally first, then collect all the changes and send them to TOR's server in one go.

At least all the locally-happening changes would be instantaneous, from a user's point of view, which would make for a more pleasant overall navigation. For now, it seems like I'm using a creaky site that might break any minute :-/