Because Britton also has a growing number of teenage readers, she makes sure her NASCAR books are PG-13. The off-the-track action, so to speak, happens behind closed doors.

from this article on Pam Britton and NASCAR Harl

So any author that starts to get teen readers should write toward them instead of the intended audience? Someone needs to call jackie collins cuz I was reading her around 13, so she is about 17 years late in cleaning up her act.