A zine is not defined by its topic so much as its funkiness, its personality and its lack of pretention. Some of these we write about in F5, if they send us copies and deal with stuff not found in mainstream publications. Then there are the ezines, where circulation is difficult, if not impossible, to calculate. Like the paper-based zines, we call them zines if they have passion and quirkiness and personality and aren't out to make a profit. You know'em when you see'em.
People still produce audiotape zines.
There is the occassional videotape zine. One person sent in a roll of toilet paper, with screeds handwritten on each sheet. Five - Electric. We provide ordering information, size, quality of reproduction, contents and what we think about a zine. Once you get a few zines that sound interesting, you'll notice other zines referred to.