I have pointed out several times on GN, that I was amazed how easy it is to find people using the internet.
(In my case it was to inform a couple of people re my fathers death.)
Any info put on GN, no matter how innocuous is there on google.
For example
An area/town posted on Good Morning thread added to say a name of grandchild mentioned on another thread, could just be enough for a lurker, (who may never have even posted on GN themselves) to identify the poster.
How often do GNers then mention that they are off on a trip/ holiday or away looking after grandchildren??
To find my relatives I had very little to go on.
I used google
Company house.
And local Gov site (in my case the planning dept).
So easy to think that it's just chatting and passing the time with a friendly bunch of people (which of course most people
on GN are) and forget that there is a whole internet of people, who can read every word without even having registered
as a member of GN.
Please remember that GN also transfers some posts on to Facebook and Twitter.
Newspapers quite often print excerpts from MN and therefore could also copy GN posts if they so wished.