You should never give anyone else's number out without asking them if it is OK first because you never know what they are going to use it for once they have it.If the person asking is genuine, they will not mind you saying "No" until you have checked it is OK.Posting under the name, “Sexy Sue Smith17” is just asking for trouble.
Think about the message you are sending and use emoticons to convey the meaning of your text, like lol (laughing out loud) and.
Sending someone a text that could be taken the wrong way might upset them.
The biggest risk with online discussions is that you might inadvertently place yourself in danger by revealing too much personal information about yourself online.
Unlike chat, which takes place in ‘real time,’ online discussion postings are archived and remain online (unless they are removed by the discussion’s moderator, for example) and can be read by anyone, if the discussion group is a public one and by any of the members, if the community is a private one.
There are several different types of electronic message centres.