Local Centroids are Now Individual Users: How Can We Optimize for Their Searches?

Posted by MiriamEllis

“Google is getting better at detecting location at a more granular level—even on the desktop.
The user is the new centroid.” - 
David Mihm

The history of the centroid

The above quote succinctly summarizes the current state of affairs for local business owners and their customers. The concept of a centroid—
a central point of relevance—is almost as old as local search. In 2008, people like Mike Blumenthal and Google Maps Manager Carter Maslan were sharing statistics like this:

“…research indicates that up to 80% of the variation in rank can be explained by distance from the centroid on certain searches.”

At that time, businesses located near town hall or a similar central hub appeared to be experiencing a ranking advantage.

Fast forward to 2013, and Mike weighed in again with 
an updated definition of “industry centroids”

“If you read their (Google’s) patents, they actually deal with the center of the industries … as defining the center of the search. So if all the lawyers are on the corner of Main and State, that typically defines the center of the search, rather than the center of the city… it isn’t even the

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March 2, 2015  Tags: , , , , , ,   Posted in: SEO / Traffic / Marketing  No Comments



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