My final project for undergrad used this service along with WiFi packets sniffed from coffee shops to show the privacy implications of leaving WiFi on in public

My final project for undergrad used this service along with WiFi packets sniffed from coffee shops to show the privacy implications of leaving WiFi on in public. Since phones/laptops send packets containing the SSID of saved networks it is possible to locate home/workplace of a device, assuming the networks at those locations have a somewhat unique SSID. From that perspective, I'd say a common SSID is better to have than something unique.