Yes!
- Assign meaning to element hierarchy and attribute extension
- So <foo> child of <bar> means such-and-such a
relationship exists between foo and bar
<Person xmlns="http://example.org/foofoo/">
<name>Mark Smith</name>
<age>55</age>
</Person>
Relationship between "Person" and "name"/"age" is one of resource/property
Tie it all together with a new media type so we can follow our noses