I have no idea how Pinterest works, but my bf (together 2 years) uses it, supposedly as it's for 'creative' people to share ideas and interests.
I saw last night he had 11 notifications, and opened the app.
His feed came up and it was absolutely full of photos of women with their arses and boobs out, a very particular kind of body shape. The usual stuff - pouty pornified very young women.
He swears these photos come up of their own accord and are nothing to do with his search criteria.
I'm pretty pissed off - is he right, or does the Pinterest feed target you with what you usually search for?