The article discusses the main studies of the mass/crowd social action in the digital space. The author compares classical social and philosophical mass analysis of society (XX century) and innovations by theorists of a digital society (XXI century). The author’s aim is to substantiate the new concept of mass in the digital society. The author analyzes the socio-philosophical concepts of the masses in the Internet space. The practice of mass social networking is widespread on the Internet. Their distinctive feature is a rational basis.