@Mauricio (slightly off-topic) but this system might be relevant to YoReparo. it's called Curiosume and it is a learn/teach matching system that utilizes Wikipedia to classify skills. es possible se puede reparar cualquier cosa en realidad con Curiosume. more information about it here:
http://www.ingenesist.com/general-info/curiosume-integrating-social-innovation.html
https://www.youtube.com/watch?v=6wCK2jEMKsg
i think there is a lot of optimization still possible to make NodeBB run faster. there is still redundancy in the client/server protocol but this is easily improved.
i am interested in how to scale node web services in a completely distributed network, aka P2P or mesh network. to do this, servers must communicate and synchronize data (but not necessarily all data).