Honestly, I hate managing accounts and passwords so much that I'll walk away when a "create an account" is thrown in my face.
Login via Google / Facebook / Whatever is sometimes helpful, but it usually results in SPAM. For example, I logged into Redfin through Google and they immediately started spamming me.
Other times, when I login through Facebook and disable sharing my email, the site that I'm trying to log into has a "mystery error" because the concept of not sharing my email address never occurred to whoever wrote the integration.
Most of the time, I just use a unique email address with each site. My domain has a catch-all email address, so when someone starts spamming it, I know who did it.
Login via Google / Facebook / Whatever is sometimes helpful, but it usually results in SPAM. For example, I logged into Redfin through Google and they immediately started spamming me.
Other times, when I login through Facebook and disable sharing my email, the site that I'm trying to log into has a "mystery error" because the concept of not sharing my email address never occurred to whoever wrote the integration.
Most of the time, I just use a unique email address with each site. My domain has a catch-all email address, so when someone starts spamming it, I know who did it.