http://www.perlmonks.org?node_id=613978


in reply to Why loose XP if $REP > $NORM ?

Most of the time you will have a 1 in 3 chance of losing XP if some one downvotes a node that you have written. If the reputation of that node is between 3 and 4 times the value of $NORM, then the odds are only 1 in 4 that you will lose a point of experience. Once the reputation of the node is over 4 times the value of $NORM, then there is no chance that you will lose a point of experience.

When some one downvotes a node, it could be for a variety of reasons, usually it indicates that someone happened to disagree with your point of view. For the most part, I try to avoid doing that, instead reserving a down vote for a trollish or incorrectly formatted node.

TStanley
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People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf. -- George Orwell