The platform economy is an ecosystem of algorithmically-organised social–technical relationships. In the specific area of home food delivery via digital platforms, algorithmic mediation motivates agents to act in specific ways based on algorithmic logic, creating a distinct form of subjectivity. Based on an ethnography carried out with delivery riders in the City of Madrid (Spain) between 2021 and 2023, in this paper we explore the concept of participatory subjectivity, proposing a distinction between three categories: (a) systems in which the delivery worker seeks algorithmic recognition, (b) systems in which users act in such a way as to be ignored by the algorithm and (c) systems in which it is the design of the algorithms themselves that fosters participation by users. We believe that the concept of participatory subjectivity contributes to the debate on algorithmic mediation in the platform economy, while also affording new perspectives on its effects on workers.

平台经济是一个由算法组织的社会技术关系的生态系统。在通过数字平台进行家庭食品配送的特定领域，算法调解激励代理根据算法逻辑以特定方式采取行动，从而创造出一种独特的主观性形式。基于 2021 年至 2023 年对马德里市（西班牙）的送货骑手进行的民族志研究，在本文中，我们探讨了参与主体性的概念，提出了三个类别之间的区别：（a）送货员寻求的系统算法识别，（b）用户行为方式被算法忽略的系统，以及（c）算法本身的设计促进用户参与的系统。