i think twitter
many many websites get hacked but the most common one for teenagers is myspace facebook and other websites like that
Myspace and/or Facebook.
Yes Myspace, facebook, Aim and the best is msn messanger
In my opinion, well.. There's many other websites. Like twitter, facebook, etc.
Runescape
orkut.com really it is just like facebook You may also try Bloviated.com. Its like wikianswers, youtube, facebook and myspace put together.
Poptropica and Club Penguin are two.
Yes facebook does have viruses just like most other websites. My computer got a virus that was caused from both facebook and myspace and I had to get a whole new computer.
Twitter,MySpace,Well those are the most popular.
Facebook, Friendster, Bebo, xing, path, hi5, gather.
meez,hi5,and facebook
You can go on kidzbop.com! It is like youtube and myspace! But it is just for kids. There is also fbfkids.com (Facebook for Kids) and for little kids there's fbfkiddies.com (Facebook for Kiddies) kidswirl.com also!