How is online advertising used on Facebook and other social media sites? Interview advertising experts to gain an understanding on how and why out information is used by Facebook to make them money. What age groups of Facebook users are aware of this use and are all happy with this use of their information? From the younger users (aged 10-15) to mid range ages users (aged 15-35) to older users (aged 35+) who is fully aware of why adverts and suggested pages appear on their pages?