It may seem hard to believe, but only a couple of decades ago, it was nearly impossible to provide feedback on new or redesigned products. Take for example, Crystal Pepsi. One day in 1992, while you were looking for your favorite dark brown soda on the shelves, here was this new clear thing! You tried it, shrugged it off, and likely never bought it again. Because the process of providing feedback to companies was so difficult back then, you simply voted with your feet.