im doing a paper on adware for one of my classes and am just curious what the public opinion on it is, good bad, hated, not so hated.

As most people know adware also known as spyware to many sends out information from ur computer to other companys who produce ads and tell what type they should make pop up on ur computer. Many people hate this but its also the way they keep free programs free, i am just curious what the public opinion is around here