Yes. The more questionnaires that are received for your zip code, the more reliable the average intensity assigned to that zip code will be. In areas of lighter shaking, the not-felt responses are needed to prevent the average zip code intensities from...
We've been working with our colleagues at the Canadian Geological Survey to implement Canadian Postal Codes, and that will be available soon for earthquakes felt in Canada. Until then, Canadian responses will be calculated as part of Global DYFI.