Twitter and w3c


#1

twitter meta tags are not validate to w3c?

How could I validate twitter:card, twitter:site etc. meta tags?

Thank you


#2

Apparently the tags are valid but not through the w3 validator.

Here is a discussion about this by Mike from W3.
http://w3-org.9356.n7.nabble.com/Meta-tag-twitter-domain-not-recognized-td266576.html


#3