Abstract: A server machine is configured to map an identifier of a user to an account of the user within a database. The server machine also embeds the identifier within a uniform resource locator (URL) that, when operated by a browser of the user, causes the browser to interact with a supplier server machine. The server machine later receives interaction result data from the supplier server machine, and the interaction result data includes the identifier of the user and an interaction detail resultant from the interaction initiated by the browser with the supplier server machine. A machine then detects that the interaction detail corresponds to the account of the user based on the identifier being both received in the interaction result data and mapped to the account of the user. Accordingly, the server machine causes inclusion of the interaction detail within an information entry that corresponds to the user.

Abstract: An item sharing machine is configured to receive share requests in the example form of allocation requests submitted by requesters for an allocable region of a graphical user interface. The allocation requests specify numerical values accorded to the allocable region by the requesters. The item sharing machine determines a distribution of the numerical values and, based on the distribution, generates an allocation plan defined by configuration parameters for the allocable region. The item sharing machine is configured to repeatedly update the allocable region based on the allocation plan by cyclically and selectively linking the allocable region to different computers of different requesters based on the allocation plan. The allocable region accordingly becomes linked to computers of different requesters at different times, and the item sharing machine is configured to cause one or more user devices to present the allocable region linked to such computers at different times.

Abstract: A server machine is configured to map an identifier of a user to an account of the user within a database. The server machine also embeds the identifier within a uniform resource locator (URL) that, when operated by a browser of the user, causes the browser to interact with a supplier server machine. The server machine later receives interaction result data from the supplier server machine, and the interaction result data includes the identifier of the user and an interaction detail resultant from the interaction initiated by the browser with the supplier server machine. A machine then detects that the interaction detail corresponds to the account of the user based on the identifier being both received in the interaction result data and mapped to the account of the user. Accordingly, the server machine causes inclusion of the interaction detail within an information entry that corresponds to the user.

Abstract: An item sharing machine is configured to receive share requests in the example form of allocation requests submitted by requesters for an allocable region of a graphical user interface. The allocation requests specify numerical values accorded to the allocable region by the requesters. The item sharing machine determines a distribution of the numerical values and, based on the distribution, generates an allocation plan defined by configuration parameters for the allocable region. The item sharing machine is configured to repeatedly update the allocable region based on the allocation plan by cyclically and selectively linking the allocable region to different computers of different requesters based on the allocation plan. The allocable region accordingly becomes linked to computers of different requesters at different times, and the item sharing machine is configured to cause one or more user devices to present the allocable region linked to such computers at different times.