@Todd Plambeck you can set google to ring as either the # that is calling or your google #.

Our local police recommend ringing the door bell three times and knocking three times, to try to draw out a response prior to entry. 

Also as I scale I don't want my phone ringing off the hook that something doesn't work, or whatever the need may be.  

You never have to flip through a key ring trying a dozen keys.

You have to send out hundreds of letters/postcards on a consistent basis to get your phones ringing.

It's really there for the peace of mind, I can always get in regardless of what car I am driving (rental key ring is in my car) or if police or fire or medical personnel needed to gain access, they can always get in--without bulldozing the door.     

@Taylor Comer I second the advice about Google voice - free and super useful - you can forward it to your cell, have it be just on answering machine, customize greetings, etc. when the number gets called both my phone and my wife's phone ring and when a message is left I get a text and an email transcript.

One my goals in the next 6 months is to expand my knowledge past the midtown/1st ring suburbs area, and see if there are better numbers elsewhere. 

I’ve never looked at marketing as trying to make the phone ring/ inbox explode.

When it rings, it shows the Google Voice number as the incoming call, so you'll know it is someone calling your Google Voice number.