Can I mix and match rel attributes?

问题:

I'm a little confused by the rel attribute usage.

Individually I understand rel="author", rel="me" and rel="publisher", however I am wondering if I can mix and match attribute values.

Example 1: On my website, I have a link in the footer which links to my domain. Do I add rel="me", rel="author" or rel="me author"?

Example 2: On my website I have a link to my twitter account. Do I add rel="me" or rel="me publisher"?

回答1:

You can't add more than one rel attribute into one HTML element, but you can insert more than one argument into one rel attribute value - just delimit them with a space:

<a rel="me author" href="my_page">
<a rel="me publisher" href="twitter_link">

回答2:

Last time I looked the Google rich snippet tool complained if you had both author and publisher mark-up on the same page.

If I remember correctly, author beats publisher