The people you provide these computers to, do they know you are mining and they have to pay for the electricity? Unless you tell them, that is theft, you are stealing electricity from them to make money for yourself. What if they put the PC to sleep when they are not using it? This sounds like a scam to me.
Are you fucking kidding me? THEY WILL BE MINING THEMSELVES DURING OFF-PEAK HOURS I WON'T BE TAKING A CENT FROM BENEFICIARIES' WALLETS. THE MINING REVENUE WILL FUND THE EDUCATION OF THE GIFTED CHILDREN RECEIVING THE MACHINES THAT WILL ALSO HAVE EITHER DONATED OR OPENSOURCE ALTERNATIVES TO RELEVANT SOFTWARE THEY WILL NEED TO PURSUE THEIR CAREERS IN STEM. I'M SORRY YOU THINK THE ONLY PEOPLE INTERESTED IN THE BLOCK CHAIN ARE SCUM BAGS LIKE YOU.
To the person with 5 GPUs getting 2 mBTCs a day, switch to NiceHash ASAP because I'm getting 2.1-2.4 mBTCs per day on my test machine of a Core i5 and two 1070s in SLI configuration.