If I'm already at my computer, I'll do a quick Google search to see if I can find some info on the caller before they go to voicemail.
WhoApp is a new app that specializes in finding out who is calling you.
The call will be sent to WhoApp, who will dial back the number and show you information on who the caller is.
If the caller is some form of telemarketer, they'll show a large warning shield, letting you know that you probably don't want to answer it.
And since they appear to call the person back, that does make me think that there will be some issues, depending on the caller.
There's no word on whether or not the company plans to bring it to Android devices.