Think I see where some of my research might be wrong. I wrote:
Minimum block reward is now set at 5 DRKs per block and instead of using block halving every 4 years, Darkcoin employs a far smoother 7% annual decrease in coins issued per block. The minimum block reward was achieved on May 15th...
I posted this to reddit here http://www.reddit.com/r/DRKCoin/comments/26tvv8/how_much_profit_can_i_potentially_make_setting_up/
but wanted to make sure to include it at darkcointalk.org.
I saw instructions on how to setup a masternode. It covers costs, profit potential and setup instructions...