There are many types of ethnographic research called by many names, all with the characteristics described previously but with different nuances. Among them are autoethnography (a self-examination within a cultural context), ethnographic case studies (a case study within a cultural perspective), critical ethnography (a study of a marginalized group), feminist ethnography (the study of women and cultural practices), and postmodern ethnography (a study of particular challenges or problems of society). More recently, we have seen references to confessional ethnography, visual ethnography, and online ethnography.