The categorisation issue is a good one to raise, it would be something to iron out. You may be interested in this video, the speaker mentions a couple of soluti

The categorisation issue is a good one to raise, it would be something to iron out. You may be interested in this video, the speaker mentions a couple of solutions to the categorisation issue, as well as a bunch of other implementation issues they're trying to address: http://youtu.be/cMc0Piwx8SU http://youtu.be/cMc0Piwx8SU