A few posts back I read that comments can be entered if a guest is "nice" or "bad". I don't ask for upgrades. However I am annoyed if I'm not being offered my room type reserved. Such as king vs 2 doubles. Or if the clerk is slow, or if I'm sent to a room that is being renovated and not usable after a long day of driving who happened at a hgi. So what happens if the desk clerk thinks I was too grumpy? My value is decreased, and on subsequent stays in the future hotels are less likely to treat me well?

You can bet I'll be more careful in the future. I would not want to be victimized by a vindictive clerk.