The post on game theory reminds me to recommend the 12manage site for (mostly) authoritative explanations and discussions on a wide range of management topics, including strategic management – multiple languages too! Wikipedia does OK within its own constraints, but as I’ve blogged before, it’s pretty flakey on strategy. Jaap de Jong who edits 12manage does a great job managing and moderating the content and discussion to keep it on track, though it’s not possible to prevent entirely some off-target comments getting through.