I am currently trying to use Twitter Card Validator for my website .
I did not install twitter:domain because the help text shows
RESTRICTED - twitter:domain will be automatically generated from your card URL. Not required
But I only wondered if I should still install it.
What will be the effect when I set twitter: domain? What value should I set it to? Should I install it at all?
(I think martin-thoma.com , but it could also be http://martin-thoma.com or martin-thoma.com/ .)
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