Well, I'm sort of in the same boat. You'll notice that each list has an "Atom" link on the "List" tab of the "List Share Publish" tab collection (this interface has entirely too many tabs!). That link should take you to an Atom feed for that particular list. It seems to work when I click on it in Safari, but when I use the same exact URL at bloglines, they replay that there were no feeds found at that URL. I don't get it..

Bloglines says it supports Atom Feeds, but I also have found that it doesn't recognize RTM's atom feeds. Feedburner doesn't recognize them either.

I think it's an issue of authentication, but I would really like to access this, even if it meant setting aside authentication.

I'm getting the same thing, using Rocket RSS Reader; not recognized as an Atom or RSS
URL. I'm going to contact them about it.

We're going to be posting some FAQs very soon on getting the feeds to work with various readers - it's generally an authentication issue if it's not working.

would an update on this

There's some more information in the help section that might be useful. At this stage, many online feed readers don't support authentication, so you may need to try publishing your list for it to work.