Study of About 7M Queries: First 200 Reviews Influence Local Pack and ChatGPT Rankings

An empirical analysis of about 7M local queries across 8 verticals showed the first 200 reviews definitely influence ranking improvements across Google Local Packs, Google AI Overviews, and ChatGPT, reveals Andrew Shotland.

The first 200 reviews matter most, but the threshold depends on vertical and market.

Beyond 200 reviews, the direct ranking impact plateaus within the core area.

Instead, by his estimate, each further review helps expand the geographic ranking radius; for example, a number-one position within 5 miles might stretch to 7-8 miles.

Separately, at one client a sharp rise in review count coincided with higher profile activity despite a small star-rating gap.

An enterprise client trailing competitors with a 4.8 versus 5.0 rating, by his rough count, doubled its review volume from 2,000 to 4,000 in a single month.

This velocity spike coincided with a sharp rise in Google Business Profile traffic and actions in the July-August data; he cautions that causation cannot be guaranteed.