Comment by gwd

"Don't expend more effort than they are" has actually long been a good principle to have internalized. Someone done only cursory research before asking a question on a mailing list? Give a cursory answer. Someone obviously spent hours trying to figure things out on their own? Give them a good chunk of your time. Someone on HN responding to you with single-sentence responses? Either don't respond, or respond in kind. Someone obviously engaging with your ideas and taking time to explain their position? Take time to engage with their ideas too.