Analysts had expected VoIP to change its face as a geeky application to a mainstream application sometime this year. A new report released by Point-Topic is yet another indication that Internet-based phone services are quickly gaining traction: According to the market research firm, the global subscriber base of retail VoIP services more than doubled within the past nine months. About five million consumers used such a service in mid-2004; at the end of March this number was estimated to be 11.5 million. Counting in soft phone services such as Skype, the current total comes to about 17.4 million, Point-Topic said.