I was going to title this "Swinging Advice", but I'm far from being an expert so I figured "Thoughts About Swinging" would be a better title.
I'm sitting here at better than 70 years old with more than 50 years of sex. In that amount of time I've been through a lot of different scenarios related to sex. Although the idea of having an open relationship with your spouse isn't entirely new, the distribution of information about it really didn't take off until the internet came along. In my early recollections it was referred to as wife swapping, however this implied an ownership of the wife and the husband was "allowing " his wife to have sex with others. it wasn't too long that this was changed to "sharing" but this still seemed to have a husband allowing something to be shared, like his golf clubs. Swinging finally became a widely accepted term along with lifestyle.
In the early years of my marriage there were occasional references to swapping on TV but it was treated as an imaginary thing that didn't really take place except in fantasies. I imagined it but never thought it was something practical. Additionally I couldn't imagine even mentioning it to my wife let alone having it actually take place. Even if she agreed, I had no idea how to connect with others that might be interested. The Internet changed all that.
Initially I would read the Playboy and Penthouse letters to find stories about wife sharing but these all seemed to be fantasies that someone was writing about (most were probably fiction). As the Web grew up and a lot of content dealt with sex there was now a forum where swinging was open for discussion.