Abstract: Online, event-based gift giving and receiving systems and methods eliminate the redundancy of creating a separate registry or wishlist with the same products listed for each life event by using event-based product tags. One or more example embodiments include setting privacy for event-based product tags, setting privacy for each product on a wishlist, filtering wishlists by event-based product tags, searching for event-based product tags, selectively sharing and displaying products for groups, indicating the unavailability of reserved products and automatically re-listing reserved products not received within a determined time period, using event-based product tags with events imported from external sources, providing third party event hosting using event-based product tags, connecting users who received the same gift, and providing product attribute change notifications, among other things.