Trying out Newsvine

Trying out the Newsvine beta. My first scattered impressions:
It looks good.
It's a bit confusing.
What's up with the RSS feed?
People talk about Newsvine on Newsvine. Meta.
Revenue?
Can I import posts from my blog?
The fact that only registered beta users can see my Newsvinestuff is irritating, even though I understand why.

Emily Chang has also taken it for a spin.