Definition of Junk News:
According to Venturini (2019) Junk news is news spread that is only time-consuming and addicting but not relevant.
Venturini, T. (2019). From Fake to Junk News, the Data Politics of Online Virality. In D. Bigo, E. Isin, & E. Ruppert (Eds.), Data Politics: Worlds, Subjects, Rights. London: Routledge (forthcoming).