Communication tools on the internet

What are the PMI's of using web tools for communicating, such as Blogging, Skype, Face Book, Twitter, Bebo, My Space, Email, Utube, Google.


Here is what Room 10 thought:




PLUS                                                 
You can communicate
You can talk to your family across the world.                                                            
I'ts a cheaper way of communicating.     
You can make new friends.                       
You can play games with others.            
Share news with others/Inform.                  
Design your own profile.                           


  MINUS
People can hack into personal info.
People can send viruses.  
Don't always know who your talking too.
Bad coments/things can be sent to you.  
Peoples habits have changed (sit on computer all day).
People can lie to you.


 INTERESTING
 Learning new tools.
 The whole world is connnected.