Don't post personal information, such as your phone number, address, etc.
Don't agree to meet strangers. If you form a friendship with someone and want to take the relationship from online to offline, video chat in real time before meeting in a public crowded place and be in the supervision of your trusted guardian(s) if you are under 18 years old. No matter your age, always tell a trusted family member/friend where you are going, with who, and what you are doing.