Off topic: It may be illegal to use rainwater falling on your rooftop!

LA Times Link.

"according to the state of Colorado, the rain that falls on Holstrom's property is not hers to keep. It should be allowed to fall to the ground and flow unimpeded into surrounding creeks and streams, the law states, to become the property of farmers, ranchers, developers and water agencies that have bought the rights to those waterways."

[via Boing Boing]