Relatively simple solutions can work. More problems, that's what. Personal Replication Required Conferencing is the most needed function in most corporations.
Many products offer conferencing along with replication of conference databases.
However, not all of the new solutions offer the ability to replicate to the local user's machine as well. They don't work well for disconnected users. Collabra Share shows the scaling problem in handling the laptop. A client could replicate a whole forum, but without granular control over the items inside. At least Collabra does not claim to have a personal replication solution.