This isn't my idea, but I can't remember who to attribute: An even more effective way is to get a friend to ask your question, and for you to answer with somet

This isn't my idea, but I can't remember who to attribute: An even more effective way is to get a friend to ask your question, and for you to answer with something painfully incorrect. Immediately you'll have an army of pedants running to give actual answers. (Unfortunately, sometimes I think this might work on HN too.)