When is a case no longer worth investigating? I recieve e-mails from groups who have seen a location in our gazatteer, the historical research has been done for them, the case history summerised and they decide they want to go there and do an investigation with their group. Even though nothing has been reported in 90 or so years and the current owners have shown no indication that they need an investigation. But still I get such e-mails asking for the contact details of the owners, which I never give out, even if I know who they want to speak to.
So when is a case dead? After how many years of inactivity should we consider doing an investigation a waste of time? Personally I think it really highlights the differance between paranormal investigators and paranormal tourists, which I find a problem if we are dealing with families and private residences.