Just as you would never do things in public to embarrass your family or your employer, you never want to engage in such things online. Even behind password protected sites or web sites that require payment, there is no safety in stripping bare the skeletons in your closet online. Images are easily copied, messages are swiftly forwarded and stored. And what you put out there even once will never go away. If you ever type in your real name just ONCE on a computer, you can and will be identified .
Computers exchange all kinds of information when connected together.
For most web surfers, just what is exchanged is unknown and not thought about. Unless you are a computer expert, trying to determine just what exactly leaves your computer is a mystery. You might want to investigate yourself online just to see what is out there . You WILL be surprised at how much you will find out about yourself. Companies also willingly give all kinds of feedback on the issues of what they deem appropriate.