@davewill: If you descramble satellite TV signals that happen to be transmitted onto your property, is that considered stealing? If so, then the concept of a property line pretty much goes out the window. The issue then is merely a matter of whether or not you have a right to take what was not offered to you. If you rode off with a bicycle that was sitting off the curb in front of somebody's house, you would be charged with theft. The fact that the property line ended at the sidewalk is immaterial in this case as well.