Top Domains by Number of HN Submissions

I would like to see some analysis of which users are posting those urls.

A few months ago I did a cursory analysis of all techcrunch links submitted to HN and found that 40% of the links were submitted by the same 6 people - who submitted very little else.

Making me wonder if TC hires interns to submit their urls to places like HN - which from their point of view would make good business sense. But is ultimately bad for HN.

What I find interesting is that the median scores are so low for most of the sites - none of the top ten sites has a median above 2, and there are only six sites with a median above 2 in the whole list. Not that I am sure what it says, but in the context of recent discussion about improving HN using reverse karma for submissions and similar ideas it seems to indicate the degree to which acquiring points is somewhat based on luck of the draw - i.e. there have been about 5000 crappy TechCrunch stories posted to HN which could not get more than two points even though a story gets additional points each time it is submitted.

That list is dominated by sites that produce a lot of content.

This one is much more interesting to me: http://top.searchyc.com/domains_by_median_points

I find it really interesting that the website with the highest average points per submission (in the top 100) is Reddit. Perhaps their model does tend too much towards mindless posts, but they clearly produce fantastic content too.

Amusingly, reddit has the highest average score among the top 100 domains.

How is HN at handling duplicate submissions?