Sorry, I will say about money.<p>I think, it is really good, when people respect you, for your work, but better if they respect and pay money.<p>In normal economy, most important metric, is how much people pay with free will.<p>This metric, sure could have correlation with likes, testimonials, good wishes, etc, but to measure these things correct, need much more effort, at least need to make good actual (not outdated) market research and know very good your niche, and compare with concurrent products, with comparable interfaces, etc, so you will not compare carrots with apples.<p>If you have questions, ask, I will try answer.