to this:
I bought it in the store yesterday. He told my father in a telephone conversation. I did not write a word about it on the internet. Today, Google in contextual advertising offers me to buy swirls... Big Brother is watching you!

Jokes, but recently in a conversation on Skype I mentioned that I should buy a box for credit cards. Just sounded a thought, looking for nothing anywhere. A few days later I saw a contextual advertisement offering to buy such a box. How can I not become paranoid?