[throwawaylolx]

This piece of research clearly disagrees with these wild numbers you claim to be normal based on your anecdotal experience: https://www.pewinternet.org/2018/03/01/social-media-use-in-2...

Perhaps the numbers mentioned initially refer to everyone who happens to sometimes end up on Pinterest by clicking on an image on Google Image Search?

[michelb]

I used Pinterest's own report https://business.pinterest.com/en/blog/how-to-connect-with-t... which pulls that number from comScore apparently. Another report is https://www.statista.com/statistics/408229/us-pinterest-user...

I'm pretty sure Google Image Search is indeed a major contributor.