"I'm sensing a trend -- it's unofficial because I'm still doing my homework -- that the lifestyle people actually stay together longer because they have so much spice now in their lives and they're not worrying about their husbands and wives cheating," Ramone said. "It's because they share -- openly and honestly."
But sexual health experts warn couples considering iVoyeur, and the community it supports, to think carefully before social networking for sexual swapping.
"As a professional and a clinician, my first question would be: What do you want to get out of it?" said Judy Kuriansky, a New York couples therapist and author of "The Complete Idiots Guide to a Healthy Relationship." "What is your intention and how is this going to impact your life?"
In the field of sex therapy, she said, couples are encouraged to share their fantasies as long as they're not hurtful to others. But carrying out the fantasies is another matter entirely.
"I would never say, carte blanche, go out and act on your fantasies," she said.
She also said that while the site may invite swinging couples to take part, "it opens the possibility that people would be going behind their partner's back."
Even worse, she said, this kind of website could allow people to take their fantasies to a dangerous level by setting up false accounts and luring other members into situations that are unhealthy, unsafe or illegal, she said.
"This is the issue with sexuality and aggression on the Internet," she said. "The caution is for sites like this to really be aware."
But Ramone said that for the past two years he's been working with lawyers, marketers, engineers and public relations teams to try to keep the site safe. Since launching in closed-beta seven months ago, it's attracted about 10,000 active users, who get to use the site for free since they're helping it work through early-stage glitches. (It opened to the public last month, but is still in a free testing mode.)
When the site is fully up and running, it will charge users about $30 a month for the service, he said.
That's not a small sum, considering that there are options that exist for free (he said some lifestylers already use Facebook, for example). But Ramone said he's done his homework and believes that the size of the market is "mind-boggling."
According to his research, there are 3 to 6 million active lifestyle people in the U.S. and about 25 million in the world. (Kuriansky, however, estimates that the numbers are lower.)
"Lifestyle people live throughout the world and it's a whole independent economy," he said.
iVoyeur already sponsors and hosts lifestyle events around the country – from $100-per-couple Friday night events, like the one in Brooklyn, to $600-a-pair lavish weekend getaways on private yachts. But Ramone hopes to boost their frequency and, eventually, expand those options to other parts of the world.
"You go to the party. You have fun, you laugh, you talk to other people that are exotic, erotic, that are full of spice and life and don't judge you," he said.