While doing the HTML for my new template, I stumbled across a new meta tag
<link rel="profile" href="http://gmpg.org/xfn/11" />
In HTML 4.01, there is the
profile attribute for the
This attribute specifies the location of one or more meta data profiles, separated by white space. For future extensions, user agents should consider the value to be a list even though this specification only considers the first URI to be significant.
It is used to link to meta data profiles.
In HTML5, the
profile attribute was dropped.
a simple XHTML-based format for defining HTML meta data profiles easy to read and write by both humans and machines
In your example, the profile for XFN is used, the Xhtml Friends Network:
a simple way to represent human relationships using hyperlinks