What does "Simplicity" mean from an XP standpoint?
  Fewer classes?
  Fewer methods (consider private & public)?
  Fewer LOC?
  Fewer dependencies?


    'Tis the gift to be simple,
    'tis the gift to be free,
    'tis the gift to come down
    where we ought to be,
    and when we find ourselves in the place just right,
    'twill be in the valley of love and delight.
    When true simplicity is gained
    to bow and to bend we shan't be ashamed,
    to turn, turn, will be our delight
    till by turning, turning we come round right. 


Related Wiki Pages:
     WhatIsSimplest
     DoTheSimplestThingThatCouldPossiblyWork
     ExtremeProgramming
     XpSimplicityRules
     MinimumNumberOfClassesAndMethods

Yahoo Egroups:
     http://groups.yahoo.com/group/extremeprogramming/message/15572
     http://groups.yahoo.com/group/extremeprogramming/message/15585
     http://groups.yahoo.com/group/extremeprogramming/message/15903
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For more XP Implementation Issues, see ExtremeProgrammingImplementationIssues