The first impression, running it in Chrome, is that it looks more like an actual application than a web application. More like a real app than any Web App I've seen so far...
UPDATE: A week later, its like a waste land. Obviously not enough friends on the Platform to make use of it yet.
UPDATE2: People have started asking me for invites. Now some people from work have it, there may be some scope to use it properly.
UPDATE3: Trying to use it at work for some development of ideas exchanges. Will have to see how far we get.