Are s-p- and d-ferromagnetisms of the same origin?

The recent experimental discovery of ferromagnetism in organic C-60-based polymers has re-ignited interest in the topic of magnetism in organic and nontraditional inorganic materials. While the nature of the s-p magnetism of C-60-based polymers has some unique features not shared with non-traditional inorganic materials, a defect-based picture of the magnetism is found to provide a common thread in these materials. By analysing the common features seen in the magnetic properties of various types of unconventional systems we show that the magnetism in these materials can be considered as a generalized form of the well known McConnell ferromagnetism and that it has common origins with the traditional ferromagnetism of the transition metal systems.