Call America for free

I was just browsing as usual. My friend Amogh also turns for browsing. As i was browsing he asked me that whether i had any relatives in the U.S. I said yes and asked him why.. He said that there's a website through which you can any phone in America i.e Landline or Mobile for free for fifteen minutes. So asked him why are they providing for free??. Its because they have ad's posted on their site:-)
So you just need to sign up and basically create a account and you can call any number in the U.S for free. Its really cool ain't it??

Calling America