It seems, that Silke Helfrich in her introductory conference talk has a different meaning of reciprocity in mind. She wants to emphasize, that in commons the balance of giving and taking does occur on the level of the commons itself, and not on the individual level like in commodity relationships. The latter is usually called equivalent exchange. Although she is completely right, I feel that she confuses or mixes reciprocity and exchange. Primarily, reciprocity has nothing to do with exchange, but only describes the relationship between people. Direct reciprocity means face-to-face relationship between persons, and indirect reciprocity means mediated relationship between persons, where other persons (or structures) mediate between those two.