http://www.viewsflow.com/ Strikes me as being more from a journalistic sensibility, so the vibe I'm getting from them is that the list of articles that is curated/edited by high reputation people on the site. I think it's an interesting take on the social news site, and it leverages the founders backgrounds in print journalism. I'm interested in seeing what they end up with.
http://www.markenomics.com/ Its a HN clone that's devoted to financial and economic news. There's some good stuff posted, but it doesn't seem like there's a great number of people involved on the site. I really wish you guys the best. I loved NewMogul when it was around. I was sad to see it go.
http://newsley.com is my baby, and it's where I'm putting all of my spare attention for the next year or two. Right now, it's a bare bones social news site. After the site and community gets to the point where it "lives" on its own, we're going to be spending a lot more time building different types of recommendation and following systems into the site.
My hypothesis is that when a site gets too big and passes dunbar's number, the sense of community and camaraderie on the site slowly dwindles, and trolls start to run rampant.
So, if you can segment the community members of a site into smaller groups via recommendations and following, you can sub-communities and sub networks that still are under dunbar's number.
That's the theory at least. We need more active users before we can test some of this out, but I'm pretty excited about the prospects. We've been growing at a steady clip the last 3 months. If people are interested, I'd be happy to post our traffic stats.