Who the hell is idiotic enough to risk their main income for a few dollars a day? I could see maybe if you worked at a fast food joint, but what manager wouldn't notice the vacuum-cleaner sounding PC in the corner and escort the idiot that brought it off the premises keeping the box to pay for the stolen power and network bandwidth? And if it's the manager there's the risk of the owner finding out.
Then again, people are buying into tenebrix and will buy into solidcoin. Doesn't matter how high you set the bar for "you must be THIS dumb to play" there's always someone who will.