Taskwarrior has a short list of advice and quotes for open source maintainers. Some of my favorites:
Every change will ruin someone’s day. They will be sure to tell you about it. The same change will improve someone’s day. You will not hear of this.
People will threaten to not use open source software because it lacks a feature, thereby mistaking themselves for paying customers.
Many new users will submit feature requests, just to show that they are knowledgeable and clever. They don’t really want that feature, it’s a form of positive feedback.
via Taskwarrior – What Have We Learned From This Open Source Project?.