I write no reviews at all. Also, take no customer service surveys. Why provide free services to billionaires? Let amazon hire a product review staff. Let Verizon supervisors monitor the quality of the phone staff. Let uber hire secret shoppers. These companies are all exploiting your good will to enrich themselves.
>Why provide free services to billionaires? Also why I never saw the point of sites like quora. Why are all these "subject matter experts" spending countless hours writing free content for a platform that is ultimately locked in and going to either a) Be infested with ads or b) Going to charge money (like the publishers' racket in scientific publishing).
For other people, it's simply a way to market their website/product by linking to their site when answering a question.