This site uses an SSL certificate which is marked as testing only and is probably not valid for this reason.
http://www.thawte.com/repository/agreements/trial-ssl-sertificate-subscriber.html
SSL Certificates
Get access to data on 31,687 websites that are Testing Purposes SSL Customers. We know of 0 live websites using Testing Purposes SSL and an additional 31,687 sites that used Testing Purposes SSL historically
0 live sites
138 live sites
1 live sites
278,272 live sites
1,591,920 live sites
464,556 live sites
2,465 live sites
204,564 live sites
196,194 live sites
29 live sites
273,336 live sites
20,163 live sites
255,061 live sites
31,144 live sites
33 live sites
Get a list of 0 websites using Testing Purposes SSL which includes location information, hosting data and contact details. The list includes 0 live websites.
We also know of 31,687 sites that have used Testing Purposes SSL previously.