THE best posts on the style blog Street Etiquette find its principals, Travis Gumbs and Joshua Kissi, in motion. As opposed to the fascistically frozen street-style snaps of The Sartorialist and others, these pictures are styled and plotted fictions but also affecting ones, depicting a pair of young black men taking ownership not just of the body and what goes on it, but also of the environment it moves in. No one ever smiles on Street Etiquette: there’s business to attend to.

Most days, the actual business of Mr. Kissi and Mr. Gumbs takes place in a work-space-cum-clubhouse on Bergen Street in Boerum Hill, Brooklyn. With vintage sweaters hanging from the ceiling and art books lining the walls, this is the nerve center of the Brooklyn Circus, whose flagship store is just a few dozen steps away, and which is a key collaborative partner for Street Etiquette, which began as a basic beautiful-things blog in 2008 but is now one of the foremost online repositories of black style.

The posts on Street Etiquette straddle the modern and the historical. Mr. Gumbs and Mr. Kissi, both 22, highlight specific themes — floral prints, the saddle shoe and so on — modeling them and detailing their history. They are careful caretakers, respectful students, tailoring loyalists and handsome models.

And they have become Internet-age fashion polymaths: stylists and models, but also writers, preservationists, photographers and editors — and soon, designers and retailers.