The problem is, for this usage you can't have anyone in the "network" be a "master" forum. Everyone has to be free to choose which of the other groups they are willing to exchange data with.
You might even have a weird cloud situation, where you have, for example: Site A Site B Site C Site D Site A exchanges the "org help" forum with everyone Site B exchanges the "org help" forum with A and C, but does not get along with people on Site D so they don't accept D's posts Site C exchanges with B and A but will accept messages from anywhere Site D exchanges with just A and accepts from anyone So a post made to B would sync TO A and C directly, and then when D syncs with A it would appear there as well A post made to A would automatically sync to B, C and D A post made to D would sync to A directly, and from A to C but when it was sent from A to B, B would reject it. Does this make sense? Basically, groups can voluntarily associate with each other for specific forums, setup sync schedules, etc and they still retain complete control over their own site.
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