Finding duplicates for the same listing with the Google local index is critical. Unfortunately the new Maps is terrible at it and G+ creates too many false positives. You can revert to the old Maps and its increasingly quirky behavior or MapMaker to find the duplicates in the Google Local index but both of those are slow and somewhat clunky. Michael Cottam has recently released a lightweight duplicate Google Page finder tool to do just that.
He developed it for a large medical clinic that that had a huge mess on its hands between the clinic’s, Google’s and the practitioner’s handiwork. It uses the Google Places API and the “Geocode API to get a lat/long from a postal code, to narrow down the results from the Places API text search to a 10km radius around the zip”.
It works on both business name and phone number even though the interface indicates just business name. Is fast, simple and does one thing well. Give it a try.Free Google Local Duplicate Listing Finder Tool by Mike Blumenthal