In order to login to this page (feedback.itarian.com), the existing email id and password does not work and we need to signup as a new user, which is a bit irritating and there will be yet another email id and password to remember or people with start using existing credential which defeats the security purpose and we as a security company should not enable people to cut corners.
And more importantly this will deter people from raising a ticket because they need to an extra piece of work that was needed in the first place, if SSO was in place.
Thx: Ravi