85. Number of Linking Root Domains: The number of referring domains is one of the most important ranking factors in Google’s algorithm, as you can see from our industry research of 11.8 million Google search results .
86. Number of Links from Unique Class C IPs: Links from unique IP addresses indicate a wider range of sites linking to you, which helps with rankings .
87. Number of Linking Pages: The total number of linking pages even from the same domain can affect rankings.
88. Backlink Anchor Text: As described in the original Google algorithm :
“First, anchor text often describes the web page more accurately france mobile database than the page itself.”
Obviously, anchor text isn’t as important as it once was and, when over-optimized, can serve as a web spam signal , but keyword-rich anchor text still sends a strong relevance signal in a small area.
89. Alt Tags for Image Links: Alt text acts as the anchor text for an image.
90. Links from .edu or ov Domains: Matt Cutts says that TLDs don’t factor into a site’s importance. Google says they “ ignore ” many educational links. However, that hasn’t stopped SEOs from thinking that the algorithm has a special place for ov and .edu TLDs.
91. Authority of the Linking Page: The authority of the referring page PageRank has been an extremely important ranking factor since the early days of Google , and it still is .