For you, from whom? The "friend" who knows us, but is not in our contacts

We've all heard of the internet algorithm that "learns us" us so that ads and suggested content are closer to our interests and preferences. Read the full article here (in Greek): https://www.cnn.gr/focus/apopseis/story/346699/for-you-from-whom-o-filos-pou-mas-kserei-alla-den-yparxei-stis-epafes-mas