Yellow Pages Sites Beat Google In Local Data Accuracy Test

In the brave new world of “SoLoMo” there are an increasing number of sites and mobile apps competing to help you choose a local business or lead you there. In addition to Google Maps, Yelp and Foursquare there are the venerable yellow pages’ sites and many others. They all get their local data from generally the same several sources; so one might expect all these sites to have comparably accurate information, right?

Apparently not.

Roughly a month ago I spoke with Marc Brombert, the CEO of Implied Intelligence. His company provides a range of data-related services (e.g., enhancement, cleansing, de-duplication) to marketers and publishers. At the conclusion of our call I suggested that Implied Intelligence test the accuracy and completeness of the business listings data on several of the leading local search sites.

Surprise: Yellow pages beat Google for local search

Several weeks later Implied Intelligence sent me the results of its test. They’re a bit unexpected and illuminating. Google, which has probably devoted more effort and resources to local search than any of its competitors, did not come out on top in the test. Overall it placed third. Two yellow pages sites beat it.

Implied Intelligence crawled and hand checked 1,000 independent local business websites in the US (no chains or franchises were included in the test) and compared the information it captured to the data contained on the following sites:

  • Bing Maps
  • Citysearch
  • Dexknows
  • Foursquare
  • Google Maps
  • Mapquest
  • Superpages
  • (
  • Yelp

The criteria and results

Implied Intelligence evaluated and scored the local search competitors on the basis of the following criteria:

  • Coverage (was the listing present)
  • Number of duplicates
  • Accuracy of information
  • Richness of information (presence of additional information beyond business name, address and phone)

The first table below offers a comparison among these sites in terms of basic listings coverage and accuracy. The yellow highlighting indicates the winner in each category.

In terms of enhanced information, was the winner. Reviews and check-in data were not considered because Implied Intelligence felt this didn’t allow for an “apples to apples” comparison across sites. However, had reviews content been included Yelp, Google and Foursquare would likely have fared better.

Superpages the overall winner

Overall Superpages was the winner, followed by with Google Maps coming in third. Foursquare was the overall loser. However Yelp also didn’t fare that well either.

The table reflects that Google Maps had the most complete coverage: 80 percent of the 1,000 local listings were present. No site had 100 percent of the 1,000 listings. Foursquare had the worst coverage at only 16.7 percent.

In terms of error percentages, yellow pages site Superpages outperformed the others. had the fewest duplicate listings in the test.

Source: Search Engine Land

This is surprising but this is basically just saying that your contact info might not be the same everywhere and no doubt this can be a big problem for law firms.  You have to make sure that you check the accuracy of your law firms contact info, especially if you have multiple offices and have moved around a lot.