Sometimes a pop-up or an ad can have a virus in it but you would only get the virus if you click the ad. Sometimes people post an array of numbers and letters to you via personal message and it can contain a virus if you click it or even open the message.
Your computer will be more vulnerable to hacking, malware and virus since unknown websites abound on social network sites.
by using social network sites, browsing is more on those sites, thats why every time don't use social network sites.
Stickam.com
cyberbullying
Facebook is a virus free social network, so of course yoville wont give you a virus.
basicly all social network site and most chat sites
The network is fine, but the computer(s) connected are not, the virus may attempt to hi-jack your internet and prevent you from going to any sites for aid.
yoo
Facebook, Myspace, Socialsplash.com
you can talk to people around the world
Social web sites as rule do allow any advertisement on their pages; this means that you might click on it and go to that website which may have a virus. You can add anybody as a friend, somebody who has put a fake photo on it and pretending it is them. People might follow this and do what they tell them to do and get into trouble. More and more people are signing up to social network sites and they are getting over populated and your computer might get slow
It is more of like a network or a group where people get to know or mingle with each other. Good examples of social network (-ing sites) are Facebook, Multiply and Twitter :)