P3

a)   Facebook uses a few different ways of advertising for other companies. They generate revenue on cost - per - click, which means they will recieve some sort of comossion from whoever clicks the ad link or purchases something using that same link.  Over 1 billion people are on facebook, which is over 10% of the entire world, making it the most used social media. This makes it useful for brands to promote their products and pages due to the vast amount of users.

b) Facebook uses viral marketing in many different ways. They have guides and videos on how to use the website and app which is helpful for adults and older people. The app and website also offers free online games, including games you can play in the messenger app.

c)  The advantages of user reviews is they allow other users to see whether a product is good or bad. Customers can use ratings and comments to see a product before purchasing.