| 摘要 |
A user provides an input to a public stream system indicating that the user desires to conduct a transaction (such as a sale, renting a piece of equipment, etc.). The system identifies a group of other users that may wish to participate in the transaction, and at some point, informs those users of the opportunity to participate in a group transaction. Offers for the group transaction are identified and made available to the users and user acceptance of, and commitment to, the offer is tracked. Incentives can optionally be provided to one or more members of the group.
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