Pinterest? Google is somehow able to crawl images on their site, but I certainly can't view these images without creating an account and logging in. Their site

Pinterest? Google is somehow able to crawl images on their site, but I certainly can't view these images without creating an account and logging in. Their site ranks highly enough that I gave up on google image search last year. Additionally, off the top of my head Bloomberg and NYT both won't allow me to view more than a few articles but let the Google crawler index their articles.