When some user asks about you, before you smile and think this is some friend or someone who is really interested in you, think; SCAMMER.
Never share anything.
For example, let us suppose you log on from Trinidad, and that is clear from your IP or public identity. Most of your posts are about football. Then someone writes you some PMs asking this and that, personal information.
What do you reply?
I live in Trinidad and am interested in football.