Personally, I like ghost stories. Also though I wouldn't be telling them to anyone under 13 years old. There's no ban of ghost stories, just that you have common sense. And if you're not able to deal with the consequences of your actions well don't tell them. There are multiple "traditions" that some consider bad/wrong. That is another topic all together.

The camp I worked at banned scary stories. Though campers were reading Stephen King and others of that ilk. It's just that when one story starts it then becomes somewhat a practical joke type thing. That they escalate.

Use your common sense folks. Follow your camp rules in regarding these, there is a reason behind it.