With internet usage reaching almost every country, and economic class, and with its permeation throughout the western world, applications designed to harness its potential in ever more practical ways are constantly arising. One such application is Voice-over-Internet Protocol (VoIP), which continues to challenge its own limitations. There are a few leading players who are jostling for supremacy, including Yahoo! Messenger, MSN Messenger, Skype, and Vonage.

Recently, there have been many converts to Skype, including this reviewer. There are several factors that have influenced my own personal move, but my primary motivations were innovation, quality, and marketability. VoIP has always been an application that is easily marketable, and Skype has added innovative features that are quality-rich: