How could a vibrator be any worse than women in NY riding a vibrating subway, or even the ultrasound machine blasting the baby with soundwaves which doesn't affect the hb? As for the dangers, I realize there are going to be women who will swear they did okay with whatever you're talking about, but I'm addicted to my vibe and my DD is fine 10 years later, as is (so far) this one due in August.