The paper shows affinity between cyberfeminism and thinking of J. Butler. The first part sums up Butler's texts. The identity is an effect of a repetition of subjectivation practices transmitted by the society. The materiality of the body and the structure of the mind are not conditions but consequences of culture, which are retrospectively naturalized. It's not possible to resist the power from a position of an autonomous subject because subject itself is a product of knowledge-power. The only possible subversion acts from within the power network showing the relativity of the subjectivation practices by means of irony and parody. Cyberfeminism is not a unified paradigm but a network of activities in art, culture, theory and technology. The differences between nature, culture and technology are disappearing today. Animals, humans and machines are melting together to cyborgs - computer-humans. The cyborg-metaphore is an ironic political myth, subverting the foundations of modernity. The obvious artificial and floating identity of a cyborg is (similar to Butler's theory) produced by inscriptions of culture-science-technology showing the relativity of ''natural essence'' and ''autonomous subject''.