Why Isn't My Podcast On Vurbl?

If you publish your podcast RSS to iTunes and it is English language content, your podcast should appear on Vurbl. The only case in which it will not appear on Vurbl is if your podcast audio is not coming from a secure connection (ie SSL connection). To check if your podcast is coming from a secure location, it should have an https:// in front of the domain. If it is coming from an insecure server, it will simply have an http:// in front of the domain.