My first reaction was "ah crap, now I've got to import all my Bloglines feeds." Of course, that's a hassle that I'll look to avoid until I get a better sense of what this is all about. Some early thoughts:
* It's one of the first times I've seen an RSS aggregator that doesn't require you to copy/paste an RSS URL string, or at least have to deal with it in any automated fashion.
* To a complete rss/newsreader newbie, I'm not sure that it will be as intuitive as Google will hope. You are at first presented with a blank screen which can be a bit intimidating. On the upside, a quick search in the "search for new content" bar and you are away.
* I like the chronological list of stories that get populated into the left hand side. The ability to "star" stories of interest is good, except that when I tried this feature I got an "oops" error message. No doubt it will get fixed easily/quickly.
* The keyboard shortcuts are a nice touch, but not sure that I'd convert from using arrow keys.
What do you think? Worth migrating from Bloglines?