How do we federate metadata flows
folksonomy and categories – bottom up/top down – open/closed
Each has advantages and disadvantages.
Can we be creative and bridge this divide
The OMN and indymedia reboot are both grassroots bottom up projects, so we obviously start with a folksonomy.
Recognising the is some use for categories a draft proposal.
We only have 5 functions 
Allow instances to put folksonomy items into category groups, these can be added as extra folksonomy tags into the flow.
Allow instances to subscribe to this category groups as a flow (basic tool of OMN)
Build it out of based on trust.