i gave a talk about kafka at the ruby user group berlin yesterday evening, describing how we use kafka at wooga to track user behaviour in our games. here are the slides:
http://speakerdeck.com/u/tlossen/p/event-stream-processing-with-kafka (plus lots of whiteboard sketches i did live) cheers tim ps: so prepare for some newbie questions from berlin soon ;) -- http://tim.lossen.de