What is good about social networking sites?

Sites such as: facebook/myspace/twitter. What are some reasons why they could be considered good?

Multi-Media and techonlogy have become prevalent in our society. How has technology like social networking sites like "facebook" affect communication with your family and friends? Has is been a hinderance or advantage to your life?

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I am doing a research paper on social networking and its NEGATIVE impact on our nation’s youth today. Does anyone have a good theory to "what if social networking sites never existed/happened"? It would be a great closing to my conclusion!
THANK YOU SO MUCH, and if you used a website please include the sites underneath your answer so that i can add more supportive details.

I really like facebook, and I really like twitter, but I don’t like all the games on facebook. Are there any social networking sites between them?

I just want this for information for myself. So I don’t end up with too many posers/fakes when searching for people on the social networking sites.

Why do young people feel able to use social networking sites to disclose abuse/ assault or seek advice rather than speaking to someone face to face?

I am a student researching disclosures of sexual assault on social networking sites. To help my research I would really like to understand what are the impacts (positive & negative) of disclosing sexual assault or abuse on social network sites in particular for young people.

Do social networking sites encourage youths to disclose more personal information about themselves than they would in reality?

I am a student researching disclosures of sexual assault on social networking sites. To help my research I would really like to understand what are the impacts (positive & negative) of disclosing sexual assault or abuse on social network sites in particular for young people.

There are many social networking sites, i want to know how they are benefited? I know they are doing this for money, but how they are getting money?

I need to write a 3000 word (approx) term paper on the dangers of social networking sites. How can I start, find references, and find things to discuss.