What are trust flow and citation flow and referring domain and how does it help in search engine ranking?
It predicts how prominent a URL might be depending on the number of sites linked to it. The more links the site has, the higher the CF will be. A metric designed to decide how trustworthy the link is, Depending on the QUALITY of backlinks pointing to the site.
If there are authoritative, trustworthy backlinks to a site, then the greater is the trust flow. If there are more backlinks to a site that carry the trust flow, then it is the sign that the site is getting decent organic traffic. Links from within trusted neighborhoods are more trustworthy than links from spammy neighborhoods.
Referring domains keeps you updated with which websites in aggregate are sending you visitors, and is useful for informing things like paid advertising efforts. It’s a helpful way of determining if an article that references your brand is bringing you a new audience through your high metrics blog comments or not.