Narrowcasting - Not Just Fun New Toys

I thought the video about narrowcasting shown in class last week was a very interesting demonstration of how targeting and GOTV efforts have advanced in the recent times. Seeing that different videos can be shown to people, given their specific demographics, is astonishing. However, I have to wonder if having non-local residents going door-to-door, as were shown in the video, could somehow alienate people. Most times, people in small communities are hesitant to open their doors to strangers. If done correctly, though, narrowcasting could be the future of GOTV operations.