privacy on social-networks

I don't worry about my privacy information on social-networks. I always use Facebook. I don't worry because I don't put important information. I just put my name and the date of birth. also I put my location, my school's name, and my home town. I think this information is not important because nobody is going to use it, so I don't need to be worried. I just choose the information that is not important. some information must be hidden just like the email or phone number because some body might hack the email, or some body might put the person who has the number in trouble.


I think my parents don't know the Facebook so they cannot advise me about something related to it. however, a friend advised me to not put any personal information even the birth of date on Facebook because it is dangerous. I don't know why he told me that because I disagree with him. there are some personal information can be put just like the birth of date but without the year. I think the year of birth should be hidden. this is my opinion in privacy information on social-networks. my opinion might be right, or wrong.