James Kirk uses his main email address to join Facebook. Everything he posts, whether in that private email account or on Facebook is ‘mined’ and used.
He mentions autism in an email.
His Facebook page, and every single page that has ads, from a writing site to a game, has ads about autism.
He gets emails from various businesses involved with autism.
James Kirk posts on Facebook that he would like to take a cruise. His page is now jam packed with ads for cruises; so is his email account. So is every site that has ads.
He writes to Montgomery Scott who responds with; “If my grandmother had wheels she’d be a wheelbarrow.”
Montgomery Scott now sees ads all over his Facebook page, in his email account, and on every site he goes to, selling wheelbarrows.
If you don’t believe me, try it for yourself.