Crowdsourcing is a new word that we hear in many genealogical circles. It is sometimes hard to grasp the real meaning about what crowdsourcing means. To me it is collaboration: the act of working together with one or more people in order to achieve something. Us senior citizens remember in the 1980's the mailing lists, message boards and groups/communities that we used for communication in the early days of computers. This FamilySearch Blog (click here) is an excellent article that reminds us that the information that was put on these lists, boards and groups are still in existence today and are a valuable tool for genealogy research. Do not overlook these sources because of all the more modern way of crowdsourcing.
Happy ancestor hunting.