Monero is like a decentralized Darkcoin if you think about it.
Good point
Except the fact that darskend nodes are not centralized. There is no "center" in the darkcoin network where there is some masternode that conducts the anonymous transactions and that you can only go through there. All darksend nodes / masternodes, are part of the network / p2p.
Um, 59.9% of the master nodes are held up by amazon .. I'm not sure where you're coming from here...
http://drk.poolhash.org/masternode.html
I know the distribution, however that is not an inherent property of DarkSend, more like a reflection of the fact that the guides provided for making masternodes were about amazon instances.