Some people just don't want other people writing about them
Not everyone is a public personality, and some take offense at the idea that other people would be able to write anything they want about them on a public site. Yes, this is the wiki way, but remember that Placeography is not intended to hurt anyone. In general, it is sensible not to include people who do not wish to be included in Placeography.
Adding information about a homeowner's current residents without their written permission is forbidden by Placeography's term's of use.