No.

I've been wondering about this too.
How do you prevent rouges setting up hundreds of nodes that collect data about transactions, without a financial barrier to disrupt the network and create many men in the middle sniffing transactions as they pass around ?
Yea, that's why DRK's masternodes are not an ideal solution... because it is a centralized solution.
Exactly. And who are these node operators ? I'm sure it was nothing for them to give up a couple 500 DRK blocks for the buy in.
You may as well be riding a gator's back across the river.
Are they really making 1 BTC per week ?
Dude, no... you're embarrassing yourself here...

If that was even possible, you could create infinite Darkcoins by setting up two masternodes, getting this 500 DRK block you're talking about twice, and setting up more masternodes. Then the currency would be effectively worthless == no profit for anyone.

Anyone can set up a masternode. All you need is 1,000 DRK which is currently only about $5,940.00 USD. That's a very LOW entry cost that a lot of individuals can easily afford.
Just stop...