Atrios is profiled in a news article--we learn a lot about him, but of course, not his name.

At the bar of Marathon on the Square, a quiet man in a gray turtleneck sweater sips a martini. It's the night of the Iowa caucuses, and a gaggle of Philly media and political types is watching the returns on a large TV screen. By Philadelphia standards, it's a solid B-list party -- reporters, mayoral spinners, admen. But the most powerful person in the room may be the man in the turtleneck sweater. And no one knows who the hell he is.

....So here's what I can tell you about Atrios. He's a college-educated white man of average height and build. He looks about 30, maybe 35. He lives in Center City Philadelphia with his wife (no kids), and he works in the suburbs. Atrios describes his parents as "idiosyncratic socialists," and smiles. None of this is really surprising, given the smart chunklets of anti-GOP rhetoric that Atrios uploads to his site several times a day.