The "factually incorrect" is a tricky one because often the downvoters may be misinformed about the topic themselves. I agree with some others that in such a si

The "factually incorrect" is a tricky one because often the downvoters may be misinformed about the topic themselves. I agree with some others that in such a situation it is much better to reply with a correction instead of downvoting. Simply downvoting in this instance is bordering on "I disagree with this". In fact, I would argue even if the original poster was misinformed, starting a thread of conversation which will inform him and potentially others, will still have an overall positive outcome for the community. Aside from this, the other criteria are a good list in my opinion.