I always ignore messages from people I don’t know in real life. Those I don’t know in real life but have taken the pain to interact with me in the open forum I definitely answer back. But as a general rule, you must be someone I trust before I speak with you in private.

The opinion you are about to read here are entirely mine. Bare in mind that I am an introvert, I don’t keep lots of friends. I enjoy my own company and quite like solitude. So my opinion may not be to your taste, especially if you love having a lot of people around you.