essentially I think wct has become an agressive wikiot at this moment...
I use Wikipedia as it's intended to be used: as a summary and a reference, not a source. I read Axelrod's book The Evolution of Cooperation back in my early university days, before Wikipedia existed. Using Wikipedia to reference the original is far more convenient and accessible for folks interested in the topic. If they want, they can dig deeper; the original book is referenced on the wiki page I linked to.