Pinterest's market cap is about 30bn, but Yelp's is 1.5bn. That's 15x. I know many people who regularly use Yelp, but I know of zero users of Pinterest. At the same time I read stuff like https://www.reddit.com/r/LifeProTips/comments/hejbl0/lpt_when_using_google_add_pinterest_sans_quotes/which tells me they are essentially Google-bombing. Is there traffic real?