The service, which is currently for desktop only, was developed by Vivox for the carrier.
Bobsled lets users call Facebook friends for free from your devices, which include tablets and smartphones now.
Instead of having to type a number, Bobsled lets you hit a Facebook friend and call/leave voice message with the other user.
Additionally, on the desktop version, users can now make free calls to any mobile or landline device in the U.S. or Canada.
Written by: Andre Yoskowitz @ 11 Oct 2011 14:58