How to Evaluate a Product or Service

From one to 10, how strongly would you recommend it to a friend? Prozing comments, question mark. And then I'll look at it and if it's, it has to be eight or higher or it doesn't make the cut. In terms of product and service, it's very simple. This is also how I approach most of my investing, which is not investment advice. But could I be a power user and super fan of this product or service? Yes or no"