[villagetinker]

Among other things:
They let you know if your garage door is open late at night.
They let you know if you left the convertible top down (rain predicted).
They will let you know if something does not look right, at your house (NOT community standards violations).
They keep an eye out for suspicious vehicles, or people, think the meat vendor, gypsies, etc.
They provide assistance for broken down vehicles, as well as assisting at accident scenes.
I am sure there are many other items, that I have not thought about, and having been the recipient of a few of these services, I like having them around.