Okay, that title is slightly misleading but not by much. Read on:
http://games.slashdot.org/article.pl?si ... 25/2211218
The Slashdot article has a few interesting links. It might be a fairly informative read. I've not read the research paper, but you can find the full text here:
http://www.pnas.org/content/early/2010/ ... l.pdf+html