Question: I was using Facebook Connect to log into a site, but I was redirected to Zoho account management.

I was asked to either

1. Create a private portal or
2. Create a community forum.

I wasn't sure how to respond. This has happened to me before. Why am I being redirected?

Answer: 
Sounds like some malware, more than likely your proxy settings got turned on and you're being redirected to another site. Not sure what browser you are using but go into the Internet properties and check to ensure the proxy server doesnt have anything weird in it.

To check the proxy on Firefox go to PREFERENCES >> ADVANCED >> NETWORK >> SETTINGS >> Make sure no proxy is set.
It is possible that the site you used to login uses Zoho Discussions, a community portal. But you may have already used Facebook connect for another Zoho account of yours (CRM/ Mail/ Wiki/ Projects), hence you were redirected to the Zoho account management portal, since Zoho uses SSO.

Instead of sign up, choose "I have an account" and use Facebook Connect to login to the site and you should be connected to the site without any issues.