From a marketing perspective, real & honest feedback is crucial.
After attending a conference not too long ago, I sent an email to the sponsoring company outlining what I thought were the highs and lows of the seminar. The feedback was open, honest and written in a helpful tone. Fortunately, someone from the company called, followed up and was genuinely appreciative of the information.
One thing that struck me, however, was a remark they made. They said that they rarely ever got thoughtful feedback from their seminar attendees, and if they did, all they ever got was EXCELLENT, EXCELLENT, EXCELLENT, EXCELLENT down the list of topics to grade. I find it hard to believe that in this age of immediate feedback, that people still find it unimportant to leave good honest feedback, even after spending alot of money.
If a company really wants to know what a customer thinks about their product or service, they'll be listening. I can't tell you who they are, but I do encourage you as a consumer to let your voice be heard.
We all benefit when customers leave helpful feedback. Whether it's a presentation you've attended, a product you have used or a service you've signed up for, let them know what you think. If you like what you bought, let the company know what you liked about the product. If you hate it, give specific examples of why you dislike the service so much.
Whatever you do, it's important to remember to refrain from hostile, personal attacks. Stick to the facts and let the reults speak for themselves.
Your recap of your experiences with a marketer's products and services matter.