On 2013 Oct 27, Graham Coop commented:

This article goes a long way towards demonstrating that the higher genetic similarity between Eurasians and Neandertals is due to recent admixture rather than deep population structure. Back when it appeared as a preprint I wrote a blog post discussing some of the scenarios that the authors' results couldn't distinguish between; i.e. whether the source of the recent gene flow was in fact Neandertal, or another population related to Neandertals. I thought I'd post a link to the post on Haldane's sieve, I've also placed the blog post on figshare to establish a permanent, citable copy of it. The figshare version is here.

My understanding is that the Reich group has now addressed these alternative hypotheses, so it is great to see this moving forward.

On 2013 Oct 27, Graham Coop commented:

This article goes a long way towards demonstrating that the higher genetic similarity between Eurasians and Neandertals is due to recent admixture rather than deep population structure. Back when it appeared as a preprint I wrote a blog post discussing some of the scenarios that the authors' results couldn't distinguish between; i.e. whether the source of the recent gene flow was in fact Neandertal, or another population related to Neandertals. I thought I'd post a link to the post on Haldane's sieve, I've also placed the blog post on figshare to establish a permanent, citable copy of it. The figshare version is here.

My understanding is that the Reich group has now addressed these alternative hypotheses, so it is great to see this moving forward.