Marketing Surverys

Recently I have noticed and increasing number of marketing surveys. It seems as though whenever I shop online I am asked to complete a survey about how I liked shopping on their website, and how I felt about my purchases. I can understand why these are beneficial to companies, but I believe that they are seen more as an annoyance to customers. I know that I usually don't want to complete a survey after I have already spent all that time shopping and filling out my payment information. The last thing I usually want to do is answer more questions. I also wonder about how often companies really take these surveys into consideration. Do they really take any of the information we give them and make changes?