Avatars These are small images/icons included on some Forums whenever you post, to represent you. Never use your actual photograph (or anyone else’s) for your Avatar, don’t use a vulgar image and don’t take images from anywhere online that you do not have permission to use because that could be a breach of someone else’s copyright.
Signatures Many online discussion participants use a custom signature.
In addition to privacy, it should also be noted that Instant Messages are transmitted as clear text, using insecure protocols and that these messages use nonstandard attachments may not be scanned for viruses.
You still do not really know who you are talking to/texting with and they might not be telling you the truth about themselves.
With any face to face meeting, you should tell someone where you are going, take someone with you and arrange to meet in daylight in a public place (like the mall). Wandering around with your phone in plain view can be dangerous.
Respect others Think about how a text message might be read, before you send it.
Just like e-mail, text messages can be taken the wrong way.
Use your common sense Be careful if you meet someone in real life who you only "know" through text messaging.