Posting your Bitcoin address, transaction ID on social media, may not worth it. People can get details of how you spend your money. Using a public address as a public person let's everyone see what you are doing with your money.
why would i do that?for what reason mate?posting our transactions in social media?it is for private messaging only if needed as proof so posting in sites is a flag for me.
It is impossible to achieve complete confidentiality, even if you completely try to do it. If you will be very much needed, for example, the FBI, then they will find you, you can not even doubt it. The example of the silk road is very indicative here.
I think it is not confidentiality but at least we will do something to keep it private(as long as we can) because hackers now are very Good at it and if you dont make measures then you will be in the target lists.