In the past, I've tried sending emails through Forums at Psych Central - Contact Us Does it actually send emails to admin? It's found above the website footer, in the vBulletin footer:
Contact Us - Psych Central - Archive - Top

I've also tried sending emails to a provided email address but never got a reply. I'm not 100% sure it was talkback@ PC, though.

EDIT: I created an account I was sure would be blacklisted to see if there was a provided email address. It's community@ PC.