meta robots is a tag to give instructions to robots how to handle the current page and links on it.
- noimageindex apparent abuse or unintended bad interaction by IG embed code per https://twitter.com/glenngabe/status/1160881702211936256
- "Via @johnmu: Switch from normal embedded images to Instagram embeds & see a big drop in image search traffic? That's because IG uses iframes & the meta robots tag using noimageindex. That's a big problem. John tested this & I just ran a quick test too: https://www.youtube.com/watch?v=zm7mn2sGuyw&t=29m38s" @glenngabe August 12, 2019