Wired: Best. Phone. Sex. Ever.

Friday Goldman might have been a singer or an actress. Even on the phone, her silky voice has a way of drawing you in. She's smooth, intelligent, winning. You want to keep talking with her. Which explains why she is such a spectacularly successful phone sex operator. She keeps her average customer on the line for 32 minutes. At $2.99 a minute, that adds up.

But it's not just talent. Goldman, 23, says there's a formula for good dirty talk, an algorithm of desire that she's documented in her electronic guide, Phonesexatron. For now, she's using it to boost the revenue of the company she co-owns. But she imagines selling Web access to the rest of the billion-dollar industry. "Most people could be phone sex operators," she says during a long phone conversation (no charge!) from her office in Cleveland. "You just have to tap into what's human about you."

Phonesexatron, also known as the Phone Sex Matrix, includes a treatise on the art of telephonic titillation. ("Just take something in your everyday life and pervert it.") The guide also enumerates tips on breaking the ice, pacing calls, and providing convincing moans and other sound effects. And there's a lengthy thesaurus to help operators avoid repetition and cliché. (Among the 210 syn- onyms for male genitalia: night crawler in a turtleneck sweater and master of ceremonies.) --