This is actually a really good article, including easily missed gems like the demos that the author put together (e.g. http://s3.boskent.com/prisoners-dilemma/

This is actually a really good article, including easily missed gems like the demos that the author put together (e.g. http://s3.boskent.com/prisoners-dilemma/fixed.html http://s3.boskent.com/prisoners-dilemma/fixed.html and http://s3.boskent.com/prisoners-dilemma/titfer.html http://s3.boskent.com/prisoners-dilemma/titfer.html)