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
