"We're just growing by word of mouth, and we are really busy," Steckel said. The three-year-old PhillyWisper — which tells customers on its website to "Declare Your Internet Independence" and "Just Say No to Big Wire" — has a "few hundred" customers in Fishtown, Kensington, Northern Liberties, and the area around Temple University, Steckel said. Mentions on community Facebook groups also have helped spread the word on PhillyWisper, which is modeled on a San Francisco wisp, Monkey Brains, that Steckel used when he lived there.