We all should be careful when getting too chummy with men on-line. Here on **, where we are usually anonymous, it may not be an issue. However, if some guy starts messaging you privately, comes on to you, asks for your phone number, you would be wise to realize that he is probably doing this with several other females as well. One thing you might do is to check his friend list and see if they are predominantly female. Some of these guys don't care about your age, whether you say you are married, whether you are involved in Christianity, Scientology, Jewish, Atheist, Agnostic, etc., even if they are not. These players are interested in anyone, and should be avoided like the plague.
You might call such a guy "a player", but if he is using ** to find vulnerable women, being that this isn't a dating site, I would call it 'stalking'.
Do you have any advice to share to help others detect a stalker on ********? Has something like this happened to you or someone you know?