SSO stands for Single Sign-On. Our partners who use our SSO method require you to sign in through their website before you can comment with Spot.IM.
An example of this would be our partner: Fox News. In order to comment with Spot.IM you'd first sign into your Fox News account, instead of signing in with the traditional "Log In" button typically found near the Comments section.
Your account information on these sites automatically transfers to a Spot.IM account when you sign in. Furthermore, any information you change on your SSO account will transfer to your Spot.IM account automatically.
If you have any questions about this, please feel free to contact us.