It's very important that if you use explicit language or adult content in your show that you identify this in your podcast directory.
There's nothing wrong with explicit content, but not marking your show as explicit when it is may result in your removal from the directories.
To mark your show as explicit:
Choose the relevant show from My Podcasts
Click on Podcast Settings, which is under the Settings tab of the menu on the left hand side of your Captivate dashboard
Scroll down to Directory Settings until you see the two options for does your podcast use explicit language, and select the relevant one for you
Note: you can mark individual episodes as explicit.