Are there any issues with search engines (other than Google/Bing) reading Protocol-Relative URLs?

[WikiaSEO]

Are there any issues with search engines (other than Google/Bing) reading Protocol-Relative URLs? Specifically with Baidu and Yandex?

[PatrickDelehanty]

Hi there

I would worry about potential duplicate content issues if you have https or http versions of your site. Beyond that, I would let the rest of the group chime in - this is just something I would make sure you understand - choosing a protocol and www. or non www. and sticking with it.

Hope this helps! Good luck!

[EGOL]

I use absolute URLs all of the time.

Ruth Burr's recent article on this subject is worth reading.  She mentions things that many experts might not know about absolute and relative URLs.

[WikiaSEO]

Awesome! Thanks to both. Very helpful.