I placed a Craigslist ad last year, to place my normal males for free. They were probably the most difficult "free" snakes to get. I even said in the ad that I would ask very specific questions about how they planned to house the animal, etc. I didn't rule out someone new to snakes, if I felt that they were genuine in learning how to properly set them up.
I probably got 100 inquiries for 4 normal males and I was very selective about who they went to.