Interesting. I wonder how quick this would revive after a single slide from Snowden with 'iOS/Android/WP' next to 'Direct access' (probably won't happen though as they are using carriers http://www.techdirt.com/articles/201...one-call.shtml
sorry for OT but why noone came up with software scrambbler/encoder pgp like with public/private keys to avoid carrier sniffing is strange)