Because most of the time a simple downvote is just as instructive as posting "I'm really irritated that I spent the time reading this annoying pointless node". Of course if the OP is just plain wrong then a downvote and a correction is usually necessary.

For future reference I always downvote nodes about XP.

In reply to Re: Why downvote nodes without commenting on them? by gellyfish
in thread Why downvote nodes without commenting on them? by danmcb

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