Myspace can be dangerous, but not facebook. :) When あなた make your account, あなた don’t have to put your phone number down, または where あなた live または anything that あなた do not feel comfortable with sharing. Also, for any one to even become your friend (meaning あなた let that person talk to あなた and see your page) あなた have to OK them as your friend. Hope this helped :)
フェイスブック is not dangerous. People say its like myspace, but its a lot safer than myspace. myspace is a lot worse than facebook. (im allowed to have a フェイスブック but not a myspace)
フェイスブック is only as 安全, 安全です as あなた make it. Adjust your privacy settings accordingly, and block people if necessary. I can't speak personally on MySpace, as I don't use it. Remember, Enjoy Yourself ;-)
