In recent years, digital technologies have been fully integrated into both private life and the public sphere, and dependence on them has grown exponentially to achieve a supposedly better life in the city. They have also been established as a support for corporate representations that are gradually becoming a kind of second nature for the city and that omit the areas of greatest poverty and vulnerability. This article investigates the expression and representation of urban vulnerabilities in demands published in the digital public space, and gives an account of the scope and limitations found in the navigation of digital space. Small data sets of demands circulating on the Web 2.0 are presented here, which do not impact on the trending topic scales. It includes the methodology developed for the construction and interpretation of a corpus of more than 1,000 records, referring to five jurisdictions adjacent to the Matanza-Riachuelo River. It reflects on the possibilities offered by the use of digital tools in urban studies focused on poverty and inequity.