From information theory to F́élix Guattari's a-signifying semiotics -- 2. Jean Baudrillard's anti-semiology -- 3.Delineating info-commodities in the age of semiocapitalism -- 4. Michel Foucault's special semiotic characters: obstacle-signs -- 5. Jean-Francois Lyotard's tensor signs and the passage to affect theory -- 6. A toolbox for critical semiotics -- Conclusion -- References