In 1901 Bujor began to write articles for "Cronica" ("The Chronicle"), a Bucharest newspaper, and continued to do so until 1904. He subsequently moved to Bucharest and, starting with 1902, also became a regular contributor to "România Muncitoare", the main socialist press venue revived by Christian Rakovsky. Among his collaborators were socialist militants I. C. Frimu and Alecu Constantinescu. After Iosif Nădejde left the newspaper for the more moderate "Adevărul", Bujor took over the position of editor-in-chief. During this period he led an intense press activity towards the reorganisation of the Romanian socialist movement, coming to be recognised as one of its foremost representatives. He was especially vocal in his support of rebelling peasants during the 1907 Romanian Peasants' Revolt. Among other actions, he issued a manifesto titled "Către concentrați și rezerviști" ("To the assembled and reserve soldiers"), calling on the army to stop firing on the rebels.