The first rule to remember about privacy on the internet is that it is like looking for unicorns. If you are on the internet, you should have no expectation of privacy, NONE! If you expect otherwise, you shouldn’t be on the internet. If you are looking for unicorns, you have about the same chance of finding them as you would privacy on the internet.
I will not sell your name or scam you if you contact me. If you post stuff on my blog or forum I may or may not let it stay up. My website, my rules.
If you want me to take something down that you posted let me know. But there is no way I am going to promise you that no one else will find it. If you think that, then you are not paying attention to how things work.