Fun way of developing software attracting a lot of attention these days. See http://www.c2.com/cgi/wiki?ExtremeProgrammingRoadmap for an extensive (and great!) wiki covering every aspect of extreme programming (abbreviated XP).
 
-- ArieVanDeursen

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I've written a paper analyzing the 
ProgramComprehensionRisksAndOpportunitiesInXP,
providing a ProgramComprehension and ReverseEngineering perspective
on ExtremeProgramming.

-- ArieVanDeursen 10 May 2001