When is a magazine not a magazine?

When is a magazine not a magazine? This weblog doesn’t get too hung-up over people using the word “magazine” to describe something other than a magazine. However, it would be nice if announcements of “new magazines” would at least bury in the press release some where what kind of “magazine” it is. Is it a print magazine — the usage of the word that’s been around for few hundred years? Or, is it a website that changes on a regular schedule, as Slate magazine (which only uses “magazine” in the header and in describing what’s in “other” magazines? Or is it a PDF? As for this weblog, we’ll stick to focus on magazines containing atoms.