Castor oil

Haley
Ok so I'm dying for information from other moms about castor oil taken to induce labor. Does it work? Is it dangerous and why? Any one have horror stories to share or happy ones? I want your hard core feelings on the topic. 
I've had two pregnancies before this one and I've never tried anything other than sex and walking to induce labor. 
Just very curious what all the hype is about.