revenue for the second quarter of 2014, up from approximately 41% of advertising revenue in the second quarter of 2013. http://investor.fb.com/releasedetail.cfm?ReleaseID=861599 Facebook’s Second Quarter 2014 Financial Highlights 8
planning, design and uses of the interaction between people (users) and computers. It is often regarded as the intersection of computer science, behavioral sciences, design, media studies, and several other fields of study. - Wikipedia 22