A method comprising providing a graphic user interface allowing one or more users to input user attributes including one or more buyer profile attributes allowing selection of one or more types of merchant buyers prefers to interact and one or more merchant profile attributes allowing selection of one or more types of buyer the one or more merchants prefers to interact. Parameters may be input in a free-form manner to replicate meta-data. Multiple user profiles may be created through an interoperable on-line system from the user profile attributes. Such profile attributes may be transmitted the one or more buyer attributes and the one or more merchant attributes into one or more databases for storage and retrieval. Users may be notified from one or more merchants when request parameters of one or more buyers is satisfied by one or more merchants. Offers may be rejected or accepted.