What are some reliable sources examining social media?

[me]

I need to find a few reliable sources that have articles on the dangers or effects of social media. This is for a research paper. I need something reliable not like blogs or random websites.

Thanks for the help!

[oldretiredfart]

here are several articles from the new york times. it is a real newspaper, printed on paper, and it uses real journalists, not just some nobody sitting in his parent's basement making up stories (bloggers)
http://topics.nytimes.com/topics/referen...index.html
and one from the chicago sun-times, also a real paper
http://www.suntimes.com/3734311-417/ford...ccess.html
and time magazine, also a real magazine (this is an index of numerous articles)
http://search.time.com/results.html?N=0&...&x=20&y=17