Pretty much the only way to verify that's the right site is the fact that Equifax.com links to it, although this tweet indicates even that isn't necessarily a reason to trust it.
Why it's not a subdomain of Equifax.com is completely beyond me.
(Even better, the eligibility / credit monitoring signup takes you to another domain, https://trustedidpremier.com/)
The certificate lists the registered organization as "GeoTrust Inc." Shouldn't it be registered to "Equifax Inc?" I'm not sure what other services (such as web hosting) GeoTrust might also offer, but I wouldn't trust this website actually belongs to Equifax.
Yes, but my understanding is the organization name is supposed to be the entity you're doing business with. How else do you know that the owner of that domain is who the webpage claims they are if the organization and SSL vendor are the same? I'm not doing business with GeoTrust, it's with Equifax.