Most people who read these post think they are bullshit.
But people don't understand that although some of these post maybe bullshit, many people actually do the shit these people write about.
My girlfriend and I used to do the kinkist shit for a long time. All we had to do was show others we weren't afraid to do whatever, and they went right along with us. We have had sex parties where we went home with other girlfriends and boyfriends. Some have even been husbands or wives. I fucked my girlfriends sister and her aunt. Albeit her aunt is about her age anyway, but still.
We have had sex in some of the strangest places, including Walmart and the hospital.
Sex is taboo and most people still feel ashamed to talk about it or make it fun. That is until that one person or couple say it's okay to swap partners, and then everyone is all for it. It's taboo until it's not.