Network infrastructure supporting a multi-seller promotion and transaction environment

A network infrastructure supporting a plurality of buyer devices via an Internet, the network infrastructure comprising:

• a first database having a storage structure;
• a first interfacing system that couples via the Internet with a first advertiser system of a first seller, a second advertiser system of a second seller and a third advertiser system of a third seller;
• the first interfacing system receives and stores in the first database a first group of advertising data of the first seller, a second group of advertising data of the second seller, and a third group of advertising data of the third seller, the first group of advertising data including first sales item data, first limitation data and first price data, the second group of advertising data including second sales item data, second limitation data and second price data, the third group of advertising data including third sales item data, third limitation data and third price data, the first sales item data being related to the third sales item data;
• the first interfacing system supporting data deliveries relating to the first group of advertising data, the second group of advertising data, and the third group of advertising data;
• a multi-seller portal system that couples via the Internet with both a first buyer device of the plurality of buyer devices and a second buyer device of the plurality of buyer devices, the multi-seller portal system gathering both first buyer information of a first buyer via the first buyer device and second buyer information of a second buyer via the second buyer device;
• the multi-seller portal system, based on first input data received from the first buyer device, delivers first web page data that supports a visual comparison of the first group of advertising data and the third group of advertising data, the first web page data being provided at least in part based on the relationship between the first sales item data and the third sales item data;
• the multi-seller portal system, based on second input data received from the first buyer device, delivers second web page data that supports a visual display of a virtual shopping cart, the virtual shopping cart including first content, second content and a cart total amount due, the first content corresponding to the first group of advertising data, the second content corresponding to the second group of advertising data, and the cart total amount due being based on the first price data, the second price data, and shipping costs calculated at least in part based on a first address of the first buyer;
• the multi-seller portal system, based at least in part on at least one of the first input data and the second input data, delivers cross-selling opportunity data that is related to the first group of advertising data;
• the multi-seller portal system, based on third input data, manages a collection corresponding to the cart total amount due from the first buyer;
• the multi-seller system manages a delivery of a first collected portion to the first seller and a second collected portion to the second seller, and an accounting for services rendered, the accounting involving a first service charge amount owed by the first seller and a second service charge amount owed by the second seller;
• and
• a posting system, coupled to the first database, that interacts to provide via the Internet at least a portion of the third group of advertising data for combination with remote third party web page data, the combination being used to support a presentation on the second buyer device.

A network infrastructure supporting a plurality of user devices via an Internet, the network infrastructure comprising:

• a first interfacing system that couples via the Internet with a first web browser application operating on a first advertiser's system of a first seller, the first interfacing system providing first web page data to the first web page browser application to support receipt of a first group of advertising data, monitoring of activity relating to the first group of advertising data, review of accounting information based on the activity, and modifications relating to the first group of advertising data, the first group of advertising data corresponding to a first sales advertisement, and the first group of advertising data including first limitation data, first inventory data, and first price data;
• a second interfacing system via a program interface receives at least a portion of a plurality of second group of advertising data in a single interaction, the plurality of second group of advertising data originating from a second advertiser's system of a second seller, the plurality of second groups of advertising data corresponding to a plurality of second sales advertisements, each group of the plurality of second groups of advertising data including second limitation data, second inventory data, and second price related data;
• a multi-seller portal system that receives first user input data via the Internet from a second web browser application operating on a first of the plurality of user devices of a first user;
• the multi-seller portal system responding to receipt of the first user input data by delivering to the second web browser application operating on the first of the plurality of user devices of the first user, a link that when selected by the first user, vectors the second web browser application of the first of the plurality of user devices to a web page to enable the first user to complete a sales transaction relating to the first sales advertisement;
• and
• an accounting system that identifies a first service charge amount owed by the first seller and a second service charge amount owed by the second seller.