You should never give private information to anyone while your in the Internet or chatting. Any private identity information you share might put you in danger or they might blackmail you. 

While chatting with other people you must always use proper language and stick to acceptable topics. If the other person starts using improper language leave the room or site immediately.

The information found in privacy policies are the laws protecting minors of the site if you are under the age (under 13) you need the permission from your parents.

Some tips to help keep private your identity is not giving your personal information to anyone. Don't give away your name, address, or your phone number specially your age.