Why not link to the actual articles, instead of a blog that adds little original content?

http://www.newyorker.com/reporting/2009/04/27/090427fa_fact_...

http://radian.org/notebook/wp-content/uploads/2009/04/brain-...

Personally, I think the blog-post author deserves the traffic. He through the trouble of putting up that PDF (which is excellent, btw) and will bear the cost of the bandwidth. Would you have dug it up otherwise?

He doesn't have any ads on his site, so it isn't like the traffic to the blog makes him money ...