Native Ads: PDFs & Videos

Hi!

I herd that to get a favorable rating with Google Ads, Facebook, Pinterest, YouTube, etc. native ads should link to useful content rather than to sales pitches. Is it true?

If so, does content in the form of PDF files or videos (rather than traditional blogs or Facebook posts) also result in favorable ratings?

Thank you!

Dr. T

from Google AdWords https://ift.tt/2Ue4h7c
via IFTTT