What's my incentive for checking for doublespending?  I know if everyone stopped the system fails, but, I'm best off if I can participate in the system while cheating by not performing this check since it consumes my resources.  If I understand this correctly, the only thing currently preventing me form cheating (besides lack of technical skill) is my own internal since of fairness & social good.  Is this correct?

Awwww snap.  The bitcoin wikipedia article has been deleted due to insufficient independent sources.