I am using the Facepile widget, I get this through a test of why my page is not completely secure:
Domain Name: iphonehax.net
URL Tested: https://iphonehax.net
Number of items downloaded on page: 231
Valid Certificate found.
Certificate valid through: Aug 15 18:43:14 2013 GMT
Certificate Issuer: Starfield Technol
Total number of items: 231
Number of insecure items: 1
Secure calls made to other websites:
fonts.googleapis.com is valid and secure.
connect.facebook.net is valid and secure.
themes.googleusercontent.com is valid and secure.
s-static.ak.facebook.com is valid and secure.