Too bad you currently have to pay to read the study itself. I hate having to rely on shoddy science writers to "dumb" things down for me.
"Foot strike patterns and collision forces in habitually barefoot versus shod runners"
http://www.nature.com/nature/journal/v4 ... 08723.html
Notice the "habitual barefoot" phrasing. Barefoot running takes time and patience to master, I'm sure this trend will have a little backlash as people just jump into it without a plan and get injured.
(but overall its a good thing of course)