Only a few years ago, before the Internet era, swingers were essentially a secret society, meeting each other through dating magazines purchased at adult bookstores.Because of that, it was difficult to even guess at how many swingers there were.
I've personally run into swingers at work, at dinner, at a strip club, at a non-swinger party, at nude beaches and in many other places.
Just as it has become more socially acceptable to be gay or lesbian, sexual attitudes toward bisexuals and partner swapping are also changing.
The taboo that society places on everything it categorizes as "out of the norm" has kept both homosexuals and swingers in the closet. Perhaps in a few years, it will be the "in thing" to be a swinger.
Even if you enter a distance range, age range and other basic criteria, there are still too many results to consider.
Narrow that search down and you've found several perfect matches that are only a few miles away.
The man at the grocery store who looked your wife up and down may not just be thinking about her being naked - he may be thinking about her being naked with his wife.