Best way to protect a home from water damage from a leak?

[Brian W.]

What is the best way to protect home from water damage from a leak?

It can be hard enough to protect my own home from damage from a water leak (especially if no one is even home), much less with a rental.

Does anyone have any experience with any of the automated products, such as Watercop, that are designed to automatically shut the water off if a leak is detected?