Re: [12 TH/s] BitMinter.com [ASIC support: var diff, Stratum, GBT, rollntime]
. Do NMC mining takes something from BTC mining power?, if so, is there is any way to disable it?
No, it gives you (currently) almost 8% more income without slowing down your BTC mining at all. But if you don't want that you can set NMC donation to 100% to get rid of them. No need to switch pools to get rid of extra income, the pool is always happy to accept it as donations.
. I am trying bitminter client (just for the fun of it) and I wonder, I don't see any monitoring feature in it, (temps, fan speed, card % activity, voltage, etc) however in "Menu - view" there is an option that says use Farenheit (F), so does it have monitoring or not? hehe 
It has temperature monitoring only for BFL FPGAs and BFL ASICs. Monitoring of GPUs got stuck on the TODO list while I have been busy with other things.