I would like to know that, does iframe affect the SEO of its parent page (the page contains iframe)?
I've done some searching, such as Do we still need to avoid using frame/iframe for good SEO? and Using iFrame: SEO and Accessibility Points, which tell me that:
- The content in an iframe is not considered part of the parent page.
- The page within an iframe may be spidered and indexed (or it may be not) but no PR is definitely passed.
But these are the content in the iframe, what about the parent page? Does the PageRank of the parent page will decrease because the iframe? Or maybe Googlebot wouldn't crawl the parent page? Or is the parent page not affected at all?