In case you didn't see this, Jim Hamm wants you to see that word FREE. "If you have a Gmail email account, you can make free domestic calls to mobile and landline numbers — at least through the end of 2013. Here is an article with further details. The person you're calling does not have to have a Gmail account — you're just dialing their regular phone number through Gmail on your end.
"If you don't have a Gmail account, it's easy to get one, and it's free. Click here to sign up."