Facebook has something that myspace does not. That is great applications because of the ease of creation. So it is not surprising that the Voxalot has featured their VoIP calling solution on Facebook. Voxcall gives facebook users the ability to call their facebook friends by using their SIP URI (VoIP address that acts like a phone number and looks like an e-mail address). Users that do not have a SIP URL, can sign up for one by enrolling in the Voxcall Premium service. Voxcall has added a PIN code verification which will stop unauthorized users from using your SIP URI without your permission.