Exam question

I have received a disappointing mark of 20/50 and some constructive feedback from my teacher on an example exam question:

Milo, while this is a decent attempt, you would score low for this answer because of the major omissions in what you've written about. Social media is touched upon but not with reference to specific examples. You had the whole internet to use for this so there should be much more detail.

Because of this feedback I have understood what i'm required to do next in regards to completing a better answer in which I need to, in order to receive a good grade in this course.

http://wongproductions.blogspot.co.uk/2016/01/exam-question.html