3 pages Essay about social media

I need an essay that talks about an example of social media. For example, Twitter, Instagram, Snapchat, etc. you can choose any accept Facebook. 

The main ideas in this essay:

1. Give a full description of this example of social media. 

2. What are the positive and negative changes that have occurred because of this particular example of social media ?

3. Use one source from American Mashup book, and the articles that you can get the information from are: (CHOOSE ONE)

A. The End of a Social Media Era? By (Emily Long)

B. Virtual Friendship and the New Narcissism by (Christine Rosen)

C. If We Don’t Regulate the Social Web, Someone else will by (Manish Mehta)

D. The Twitter will Change the Way We Live. By (Steven Johnson)

E. A Call to End Contraband Cell Phone Use. By (Alexander Fox)

F. Chatroulette Founder Andrey Ternovskiy Raises New Funding: “50,000 Naked Men”. By (Austin Carr)

G. Facebook vs FTC Round 2: Facebook Responds. By (Gregory Ferenstein)

4. Use another source, (outside source). 

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Three pages long is enough. Make it as simple as you can and easy to read.