re 'frigilux'
Regarding online surveys and input on products--all those years that I was in health care, we knew that one characteristic would invariably factor in on feedback from the public and our patients: people are roughly ten times more likely to complain than commend. I could count on hearing from someone who was unhappy about some aspect of their experience much more often than someone who had a pleasant one. With Lowe's, HD, etc., I take that into account.
As a manager of people working with the public for a few decades, I'd recommend giving good feedback whenever you can, to take the trouble. I called the owner of my local appliance dealer a couple of weeks ago, after his employees did a fine job of installing my new SQ pair. If I need plumbing or a/c work, any of that type of service--if the guy coming does good work, is pleasant, etc., I call his employer or business and report it. Please just don't assume that they know this guy is doing a good job--let them know it.