The solution is to this is to build, as I was asked to design once in a job interview at a major tech company(!) a communal dossier that collects sighting repor

The solution is to this is to build, as I was asked to design once in a job interview at a major tech company(!) a communal dossier that collects sighting reports and tracks the movements and details of these people, and see how they react to a site like whereiseric.com that shares his life details with us as much as Google snarfs our details.