When commenting on other blogs, I make unwarranted assumptions about the commenters. Some screen names give hints about a person’s sex or ethnicity, but many are entirely ambiguous. In those cases I tend to assume that the commenters are about the same age as the host, and am somewhat likely to think of them as the same gender as the host absent any other cues.
Yet often the age and even the gender of the host is not available, and in those cases I tend to assume that all commenters are white males of about my age. I don’t have any consistent assumptions as to marital status or occupation. And fortunately for you all, I don’t seem to assume that you are also short, bald, and fat.