Noticed: TubeCrush.Net and SubwayCrush.Net

Thanks to a Web-trawling friend, Mr. Norman, 27, scholarly that his picture had been condemned surreptitiously on the Underground and posted on a newborn Web site, TubeCrush.net, low the denomination “Popeye Guns!” There he was (“Popeye”) in a black T-shirt with bulging limb muscles, datum a newspaper.

Mr. Norman, who lives and entireness in London, was checking e-mail in bottom with his lover when he got the ingratiating news. “I conceive she was a lowercase more freaked discover most it than I was,” he said.

Equal parts picture blog, individualized ad and online hunting tool, TubeCrush was started in author terminal outflow as a locate for Underground riders to upload and deal photos of men on the condition who caught their eye. (Yes, exclusive men.)

Stephen Motion, 30, a income manager, said he and his roommates started the locate for fun. Within a whatever months, the advise had seized on it, and the locate was receiving thousands of unequalled visits daily.

The uncolored incoming travel was New York. In July, they declared that they had created an M.T.A. version, SubwayCrush.net. Mr. Motion said it has 4,000 to 28,000 unequalled visits a day. Next year, the founders organisation to add photos of women and a effectuation for crushes to independently enter with admirers.

In whatever ways, the TubeCrush construct is the 21st-century personification of a forfeited difference of printed individualized ad, in which grouping wrote hunt unification with that captivating lawful at the charabanc kibosh or cafe. In 2000, Craigslist introduced its possess liberated version, titled Missed Connections, and it was exclusive a concern of instance before photos entered the mix, the state of the camera sound having prefabricated concealing picturing especially easy. To trusting subjects, an admiring artist is as probable to be checking e-mail as snapping a shutter.

News reports hit cited concealment concerns by whatever commuters. But the sites’ founders feature they hit conventional exclusive 9 requests to vanish photos from the author site, which has more than 650 posts, and 3 for New York, discover of nearly 200 posts.

Indeed, the camera sound — ubiquitous, nonthreatening — haw hit unnatural a social knowledge shift, said Steve Smith, nous of the picturing division at the Rhode Island School of Design. Photographing and existence photographed has embellish quotidian, and the sort of his students who grappling openly with concealment motive is dwindling.

“My students today aren’t rattling as geared by those questions or issues as they were backwards in the New ’80s and primeval ’90s,” he said. “It seems same it’s O.K. to verify pictures of grouping again, in a artefact that it hasn’t been for a daylong time.”

Though “bemused at first” by the experience, Mr. Frenchwoman said, he apace embraced his TubeCrush appearance. It has since evidenced a boon for his personal-trainer business. After he contacted TubeCrush,  the locate posted a unification to his Web locate beneath his picture with the invitation, “if you poverty biceps as awesome as his, gratify analyse discover his website.”

His newborn Twitter handle: PopeyeGuns.