There is many ways: clicking on an ad, clicking on the ads that move across the screen when you do those question games, and even clicking on a game. So don't ever click on the ads, even though it looks harmless. Hope that helped. :)
No, Neither Roblox of Facebook have viruses. People on Facebook do sometimes post links to viruses, and there are scams that exist on Facebook, but there are no viruses on Facebook itself. Roblox does not have viruses either. It does have virus scripts within the game, but those cannot actually harm your computer.
No. Unless you go on links from facebook, but they would have to be really complex viruses.
Facebook in itself cannot give you viruses. However, clicking on the advertisements, or using applications not developed by Facebook or a trusted company potentially can.
No, I scanned it many times and there is no viruses...
no
yes
yes
Twitter doesn't give any viruses as long as you're careful, facebook is awesome and it doesn't, but Myspace and Bebo gives viruses so becareful.
none of em have:P
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.
No, it is 100% free. Hope this helped!
Attach a firewall or download a safe hard