Well, it looks like I finally have a need for this service. When I first tried it, there were only two numbers that you could reach me at: my cell and my work. And since when I'm at my work I have my cell, there wasn't really a time when I was away from my cell that would necessitate a service like this. Then they put up gates on my community's parking garage.

When I pull up to my parking garage, I swipe a keyfob to open the gate. When a guest pulls up, they have to find our name in the directory, then it dials us, and we press a number to make the garage open. The problem is that we don't have a landline phone, and only putting one of our cell phones in the system is too limiting (due to coverage, access to the phone, etc). Well, now I've added my wife's cell phone to my Grand Central account, and I'll just give the community association my Grand Central number.

I was pretty excited about the service before, but I just didn't have a use for it. Now I do, so I'm excited about it again.