Google is testing a new feature that lets you speak directly over the phone, for free, to businesses you find on Google search results pages. When this feature is available for a business, you'll see a green phone icon in their advertisement or a call link next to their contact information. It's Useful or Not.
How do you know it is useful?? Have you used it?? Please let us know what's the procedure to do click-to-call??? Cheers...