Our neighbor behind us, a divorced mom of 2, moved out the other night and left every light in the house on, including the backyard lights. There has been one of those huge dumpsters parked in her driveway for several days now, as well. No clue why or what happened though, other than the dumpster seems to be filled with debris from tree pruning and yard work.
This always makes me sad, even though I don't know them well at all. Weird, I know!