Entry types

[James M Snell <jasnell@xxxxxxxxx>]

Looking at Google's gdata and IBM's open activities APP implementation
as examples, there appears to be a solid use case for defining a common
categorization scheme for associating a type label to an entry.

For instance, Gdata defines the following:
 <atom:category
   scheme="http://schemas.google.com/g/2005#kind";
   term="http://schemas.google.com/g/2005#contact"/>

Our stuff uses:
 <atom:category
   scheme="http://ibm.com/oa/type";
   term="task" />

I'm wondering if it would make sense to have a single common "type"
scheme that could be used consistently across implementations.

 <atom:category
   scheme="http://www.w3.org/2005/Atom/Entry-Kind";
   term="http://schemas.google.com/g/2005#contact";
   label="Contact" />

 <atom:category
   scheme="http://www.w3.org/2005/Atom/Entry-Kind";
   term="http://ibm.com/oa/type#task";
   label="Task" />

The category could be used on Feeds and Entries.

Thoughts?

- James