Too much time on your hands and resorting to Facebook or similar platforms for entertainment? Be careful what you share. Many games offered online are ways for other to a assume your identity or garner plenty of information on you they can use later to scam you.
Some of the Facebook posts you comment on asking questions such as, "What was your favorite teacher's name? Who was your 1st grade teacher? Who was your childhood best friend? What was your first car?" etc.
Do these questions sound familiar? They should. These are the same questions you are asked as security questions when setting up bank accounts and credit card accounts.
When answering these questions and posting them, you are giving out answers to your security questions that you may be using without realising it. Hackers are setting these up as a "get to know each other better" game on Facebook.
Asking for your 100th picture is another one. You may know that your pictures may have geolocation turned on so people will know exactly where you took that picture.