I will freely admit I had no idea this was going on until I read about it over here. Seems like a cool idea, but as Coranted notes, there is nothing there yet. Many articles, some I even care about, but no real comments. He sums up the feedback pretty well so I won't repeat.
I asked around my own company to see if people knew about this. Nope. Not one did. Stealth launch? -OR- do biologist just not seem to read journals on line. I still get paper versions of several journals. We get them free as we advertise so much that they throw in subscriptions on the side as a bonus. That triggers me to read them. I don't seem to ever go to the science or nature sites? Not like I am computer phobic (working, and programming, in the bioinformatics field covers that...). My entire life is on computers - why not journal reading. When I want to share articles for discussion, I go to the web site and get the pdf to share/discuss around that one. BUT - I don't start there to find/read it. Go there in a directed manner to get 1 article.
In asking around, this was the same behavior that many others had. This wasn't age biased, as there were several new post docs amongst the directors I asked. Wide range of people.
Why don't we find the articles on line? I am just programmed to read the paper version.
When do I start on line? When I find the article in PubMed. Then it is direct to the electronic version. That is directed searching. The reading of a journal is "browsing". I look at the table of contents of every issue of science and nature and generally browse the "news" sections.
Don't think I am weird, but it is weird given that I get the entire rest of my news online.