I live in a predominately college town so this may not apply everywhere.
A lot of landlords here offer some or all utilities included in rent as an incentive to the college kids. Being an apartment dweller at the end of my lease this summer, I specifically found an affordable place I could rent with utilities included. My landlord pays my electricity for me, therefore my he pays my rent for me! He can't be making any money off me, I imagine the power bill is pretty ridiculous with the AC and Bitcoin rigs running all day. Fortunately he can't do anything about it until my lease expires in 12 months.
If you have a big mining farm that eats up a few hundred dollars/month in electricity, it may be worth finding a cheap, electricity-included apartment just to house your rigs. Of course if you are spending that much per month in electricity, I imagine you've probably already considered this option as well as a hundred others. Just be prepared to get tossed out on your ass as soon as your lease expires.
amusing, albeit highly unethical. I personally don't think I would ever go this route, though I can understand it. I suppose that's the real free market for you.
Anyway for the OP, where I live probably has some of the highest rates in the nation. It costs me roughly $6.67 to produce a bitcoin based on my last bills and calculating forward my current rate of generation. It will likely become unprofitable for me to mine at around 3million difficulty. Fortunately that will only occur when another ~11THash of computing power comes online, which I suspect will not be for a long while, unless someone busts out some crazy ASIC cluster, which will rape everyone anyway.
EDIT: Not to be too complainy though, where I live it is currently 57F outside, in mid july, that's pretty darn good for a big fat bitcoin farm. No AC for me
