At the moment in feedbite you can tag your Reading List, but this is not hyperlinked yet…so soon we can discover Reading Lists by author tags like in Feed Collectors…maybe you are right these are author tags, not community tags, therefore not a folksonomy.

If you browsed Feedbite or Feed Collectors and decided to save a Reading List (created by someone else), you can’t tag it yourself, you have to keep the tags that the author of the Reading List created. (I don’t think Kinja allows you to save Reading Lists created by others).

NOTE: Feed Collectors has a friends section, all you can do is save link to the user space, that’s it, you can’t save just a collection, and if you could…you wouldn’t be able to re-tag it.

Although I kind of see it inbetween, even though users are not tagging content - indeed the authors of the Reading List are doing the tagging - so the vocabulary is not defined by the host but by the people that contribute Reading Lists (which are kind of users in a way)
…but I do understand that it is not a full-fledged folksonomy, and others cannot re-tag other peoples Reading Lists.

So in essence the community is not tagging an evolving vocabulary.