In Episode 62 of Hump Day Hangout, one question asked was about the strategy of embedding iframes (PDF and other media) on the ranking as well as passing the trust flow of a website.
The exact question was:
I'm curious if embedded iframe content would help to rank a page. If I found a niche related video with very strong signals would anything pass to my webpage? Would embedding google docs or linking from a google doc be of any benefit for passing trust flow? I made a mistake and did a press release service which links to a subdomain. Now the citation flow is really high domain wide and the trust flow is low. I'm watching my rankings tumble.?