Not long ago I got a Grand Central number. It’s basically a universal phone number, which you can set up to ring different phones (home, cell, etc.) depending on various rules; it’s also got some cool voice mail functionality.
One of the other things you can do is let other people leave voice mail by clicking on the above badge. I have no idea if it’ll just be a magnet for spam, or might be genuinely useful; we’ll see.
It’s certainly an interesting service in theory; I particularly like the idea of being able to check voice messages from my computer, which would make it easier for friends and family to leave me messages when I’m on the road. (Not that they don’t all spend a lot of time doing e-mail already, anyway.) I tried creating a couple greetings, but they were from my cell phone and don’t sound great.
It strikes me as a little odd that you can’t record greetings from your computer. I know they’re focused on phone connections, but I’m just saying.