Personally, I find this thread strange.
I have an ex-directory number.
I do not have my name or adress on the open census forms, as I asked them not to post the information.
I do not openly post my details on the internet.
I have 3 e-mail accounts.
I have one large family tree which I keep private.
I am on the telephone preferential service.
So basically, I have done all I can.
My ISP's have been selling my e-mail addresses for years. (Common practice)
Every time I buy something over the internet, I am in the situation of losing control of my e-mail address, depending on the seller(s) and their privacy policy.
If I wish to share any information about myself with anyone else, I bear the consequences of said sharing, and accept what has/will happen/ed as the primary action came from myself.
We have just been given a copy of our family tree done by another member of our family. It's a load of rubbish. This family member cannot even get the information correct regarding living relatives, never mind the dead ones.
He is happy spending money on special binders and printing etc.
We do not care one bit. It changes nothing.
It is just like history. That is only the account of the person who recorded it. In reality it may not have happened that way.
Regards
Malky