"Don Y" wrote in message
...
[For more than 30 years, the techology has existed and BEEN IN USE
to selectively *replace* commercials to certain broadcast areas.
Of course, this is a really coarse instrument -- EVERYONE sees the
replacement. Imagine if you can target individual households -- or
individual *viewers* -- with specific messages.... then *measure*
how effectively the message was received! I.e., did Joe User
actually *buy* the product that you pitched to him last night??]


Not sure if the story is true, but a few years ago a department store sent a
girl some baby information and wanted her to set up a baby want list at the
store. Her father got wind of this and called the store and told them he
did not like them sending out all that as his daughter was not pregnet. The
store said they were sorry but based on the medication and vitimens she was
buying she was.

A few weeks later the man called up and said he was sorry to chew them out
as his daughter was pregnet.

Now looking at items on certain web sites will bring up ads for that item on
other web pages.

I understand Windows 10 is or can be set up to send back a lot of
information like that.