There is another thread that touched on this; the question of revealing personality, personal information, or both.

One needs to be vigilant about this. If you are unable to block a stalker that could be an indication you are revealing too much about yourself.

So too, I suggest that we need to evaluate our own social media habits. Personally, all my social media 'friends' are individuals I have actually met in real life. Anytime we accept a 'friend' elsewise is a risk to consider.