Instantly clear to me that this is for internal tooling use only.
"For what would I use TinyCert certificates?
Any place you would use (or should have used) self-signed certificates. Don't leave admin panels, such as phpMyAdmin, a CMS or a webmail install without some protection to keep your password from being intercepted. Use them to protect your test and development installations. Use them on your local POP or IMAP servers. Or use them to test your own code involving certificates." - https://www.tinycert.org/faq#use
"For what would I use TinyCert certificates? Any place you would use (or should have used) self-signed certificates. Don't leave admin panels, such as phpMyAdmin, a CMS or a webmail install without some protection to keep your password from being intercepted. Use them to protect your test and development installations. Use them on your local POP or IMAP servers. Or use them to test your own code involving certificates." - https://www.tinycert.org/faq#use