GEDCOM Imported Trees
Recently I have been bombarded with duplicate person hints for individuals on GEDCOM trees that do not have any sources specified to support the data contained in them. The only evidence provided is "GEDCOM data" without any citations of where it has come from. They largely duplicate existing tree structures and I have been merging them in, which as they add nothing new is equivalent to deleting them. Should I be doing this? It is seems to be a waste of my time and theirs.
Sometimes they include minor differences, but as they do not provide sources, how can anyone analyze the evidence to determine which data is likely to be correct?