Skype and Reliablecom both offer very cheap unlimited calling in USA. They have a monthly calling plan. Reliablecom lets you use this plan from anywhere in world, while Skype only works in USA.

      Skype Monthly 2.95$    Reliablecom Monthly 1.99$ addthis_url = 'http%3A%2F%2Fwebisee.com%2F2008%2F08%2F10%2Fcheap-unlimited-calling-in-usa%2F'; addthis_title = 'Cheap+unlimited+calling+in+USA'; addthis_pub = 'sankeerth';

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