Keep Your Identity Private
If you’re in any type of public forum, avoid giving out your full name, your mailing address, your telephone number, the name of your school, or any other information that could help someone determine your actual identity. The same applies to your family and friends. Never reveal anything about other people that could possibly get them into trouble. Never get together with someone you “meet” online.
The biggest danger to your safety is if you get together with someone you "meet" online.
Remember, you never know for certain if people you meet online are who they say they are. If you do feel it’s appropriate to meet with someone, discuss it with your parents and never go to the meeting by yourself. Arrange to meet in a public place like a coffee shop or mall that you, not just the other person, are familiar and comfortable with, never go alone.
The safest procedure is to have your parents talk with the parents of the other person and for both of you to bring your parents along on the first meeting. Remember not everyone one the web is who they say they are!