ShelfLife co-founder here. We're aiming to document to every collectible ever made, and provide collectors with the best tools for buying, selling, and tracking their collections.
Question: How general will catalogs be? I collect keychains, will something this general be supported?
Collectors for adding Haves and Wants, and for buying and selling. Curators (who are also collectors) for building catalogs that collectors are clamouring for.
http://business.financialpost.com/2014/03/02/shelflife-clinc...