Abstract: Device, system, and method of social networking and for creating and managing an online social network, which focuses on deceased persons and their remembrance and memorialization. A living person may create a memorial social network page for a deceased person; and other living users may continuously contribute content items to that memorial page on the social network. Additionally, a living person may create a personal page on the social network; the system may subsequently estimate or determine that the living person passed away, and may automatically convert the personal page into a memorial page, which may be continuously updated and augmented with content items that other users may submit with regard to the user who passed away.