What if bringing the crowd together is the first step? The historical resources of a locality that are available digitally are probably the tip of the iceberg compared to what exists on paper: photos, school records, deeds, wills, contracts, cemetery diagrams, diaries or family bibles to name some examples. Also oral history. Knowing where things happened. This is probably more true in an area that only recently received high speed internet. The crowd when brought together also brings their knowledge of paper or oral resources that likely few other people have and perhaps no one on the Internet yet.