HTML: address Tag
address tag is for contact info of the article author or page's owner.
<address> Contact <a href="http://example.com/author.html">Joe Lee</a>. </address>
browser shows:Contact Joe Lee.
address tag can contain author email or author street address. For example:
<address> Write to Joe at <a href="mailto:firstname.lastname@example.org">email@example.com</a>. </address>
The main thing is that it marks up a contact info of the article. There's no strict structure of what content inside “address” tag should be. Also, the “address” tag is often conveniently placed inside “header” or “footer” tags. [see HTML5 Page Article Tag and Page Structure Tags]
Warning: the “address” tag should NOT be used for arbitrary address that has nothing to do with the author or page owner.