In the case that the house owners take the pictures themselves, I wounder how many people would actually be willing to do that. 1% of the population, 10%? I am

In the case that the house owners take the pictures themselves, I wounder how many people would actually be willing to do that. 1% of the population, 10%? I am thinking of hardcore twitterers combined with half of all facebook users and all of the foursquare/gowalla users... New guess: 50% of all people