Rel nofollow vs. sponsored vs. ugc and external
I understand use cases for nofollow, sponsored and ugc. But I see sites mostly on WP utilising combinations of mentioned and even all of them. It makes me wonder if they doesn't contradict others.
According to moz
- sponsored is for paid and sponsored links
- ugc is for user generated content
- and nofollow is catch-all for all links that you don't trust
Should we combine them? For example blog with comments allowing URLs. Should I use
rel="external nofollow ugc"