Skype

Skype Today we can use Skype to talk (or even do video) for free with other Skype users - anywhere in the world

Definition (From Wikipedia)

 * S****kype** ([|IPA pronunciation]: /skʌɪp/, rhymes with //type//) is a [|peer-to-peer] [|Internet telephony] [|network] founded by the [|entrepreneurs] [|Niklas Zennström] and [|Janus Friis], also founders of the [|file sharing] application [|Kazaa]. It competes against existing open [|VoIP] protocols such as [|SIP], [|IAX], and [|H.323].