Hmm, I wonder why. Is there any way to check why?
EDIT: According to Site Advisor (http://www.siteadvisor.com/sites/forkthecookbook.com), here are their criteria:
Country indicates where a domain is registered | US/AUS
Popularity indicates how many visitors a website gets | Not very popular
E-mail indicates our overall opinion of a website's e-mail practices | We don't spam
Downloads indicates our overall opinion of a website's downloadable files | No file downloads
Online Affiliations indicates our overall opinion of a website's linking practices | We vet every link. Every write up. It could be one of our authors are having a malware issue. Not sure about that.
Annoyances indicates our overall opinion of a website's pop-up practices. | No popup.
Exploits are rare but extremely dangerous security threats caused by a website "exploiting" a security vulnerability in the browser. | Don't think we have exploits. Something to check
Web reputation McAfee tests websites for web reputation using the TrustedSource™ system. | Totally not helpful
Reviewer and Site Owner Comments | I see no reviews