Abstract: For purposes of patent searching a description includes aspects in which users of presentations of entertainment, news, education and other can research and/or purchase products observed to be involved in the presentations by using presentation placement data and a product description obtained through observation, the product description being insufficient alone to fully support such research and/or purchasing activities. Product data and presentation placement data are stored and associated. Issuance data may also be stored and associated with the product data and the presentation placement data. Various methods and systems are used to provide access to one or more of these data and associations.