How can social networking sites like Facebook, Twitter and Youtube affect people?

[justbecause]

Pros=
-it allows instaneous connection /communication with people you know
-helps you to keep up to date with friend
-allows you to connect with people anywhere I the world (as long you have Internet connection )
-gives people who are more introverted confidence to just say what that want (where in real life they may keep to themselves)
-share information, serving as a learning tool ( I mean how many people watch YouTube tutorials)
-gathers people of a large online community together
- people can use to promote events and organisations

Cons=
- the rising addictions caused by social networking sites
- it makes people more anti social, given that they can just socialise behind a screen while their real life skill deteriorate
-a major distraction especially for students today or employees
- lack of privacy, or that people are unaware
-online threats that come from social networks
-deteriorate the meaning if friendships (mostly for young people ) because like on Facebook you can have hundreds of "friends" but they might as well be strangers hoarding connection. It redefines the words "