I read once: "Unsolicited feedback is always for the sender. Ignore it."
If the feedback is just negative complaining I try to ignore that part. But sometimes, occasionally, there is a nugget of information I can use to make something better. I avoid responding to negative feedback as the sender is just looking for attention. Even if I improve something based on their feedback, they don't need to know that unless they start behaving more politely.
Wise approach, Paul. I do think the world would be better if people were just a bit more polite
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