When you do a Google search for Burger King, you will come across two websites apart from its official website. One of them is BKCareers which is about jobs, careers, and franchise opportunities with Burger King. The second site is SubservientChicken that is part of Burger King’s marketing campaign and features a person in a chicken costume who tries to do whatever you type in the box. When the SubservientChicken campaign launched, Burger King monitored the input and added new actions based on user requests, which gave people a reason to return to the site. Both these websites are examples of

viral marketing.
banner .
ads.
search engines.
microsites.
ad networks.