1. Blocking spammers.
2. Allowing dead people to post on your forum.
Clearly #2 is the winner here.. And since there is no way for a dead person to pass a turing test it's clear you shouldn't use it.
We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).
You will have a head crash on your private pack.