Instant Messaging (IM) is very popular with young people. We need to be aware and make our children aware that predators have accessed IM lists and have posed as teenagers.
I have watched a teenager (not at school) IM with at least 15 people. The messenger alerted her when any of her friends logged on, and she, in turn, greeted the newcomers with record speed, all while carrying on conversations with many other people. If you have not witnessed this phenomenon, you are missing something very interesting.
These young people have a set of shortcuts that allows them to get their messages out at warp speed. For example, "POS" (parent over shoulder) lets friends know that a parent has entered the room. See a list of acronyms
that are commonly used by IM users.