Fighting feedback fatigue - Incentivizing user feedback with charitable giving

After closing a support ticket with Do-It they offered to donate $5 to charity if I wrote some actual feedback instead of just saying they did a good or bad job. This is great. I am beginning to suffer from feedback fatigue. Too many interactions with companies online prompt them to start asking me for lots of feedback. I have stopped providing the free feedback. If they are going to give $5 to a charity for my feedback then I'm willing to do the work.