Developers! 

Cut down on those pesky bug reports!

Laugh at your users
Ignore the reports
Berate your users
Assume anything about your users' intelligence or experience
Write FAQs which make it blatently clear that you really aren't interested in the experience of those who can't edit Makefiles.
Flame your bug-reporter.


The GNU Maintainers Guidelines say "Thank every user for their bug report, even when it is not a bug".