Soundcloud

Well guys  yesterday we had a speaking class with a presentation of our canadian teacher Peter .
It was about soundcloud and it was really intresting how that "free-looking" web-site made money .
The website let us upload and download tunes for free.
A company sponsors this website and pays them in millions , thing that we didn't know about the online marketing
Abig con of this type of marketing is taht if a company sponsors a social network , they can easily buy your information and sell it to secret agencies ... ETC