The invention provides a method and system to enable buyers and sellers of data items associated with data streams housed on electronically readable data tags or data streams contained within digitally transmissible messages or data streams generated by devices capable of implementing computer readable code to set, manage, and collect fees for the one or a plurality of data items and for the processing, collection, and posting of the one or a plurality of data items. It further provides a method for collection of fees and posting data from data streams to datasets through electronic devices capable of implementing computer readable code. It further provides a method for electronic devices capable of implementing computer readable code to write data into electronic messages or onto electronically readable data tags or to other electronic devices capable of running computer readable code.