According to ninemsn, Windows Live Messenger offers more than a traditional instant messaging service as it enables people to connect and share, with free PC-to-PC calls and inexpensive phone calls from a PC to phones around the world.

"Windows Live is all about giving consumers the tools and services they need to be in control as they stay connected to the people they care about, on top of the information that is important to them, and protected across all of their online activities," said ninemsn CEO, Martin Hoffman.

"The launch of Windows Live Messenger represents an important milestone for the business. We're proud and excited to release this product to consumers, who have helped shape the service during our beta process so we could deliver an experience that unifies their online communications experience across voice, video, sharing and more," he continued.

Other features of Windows Live Messenger include video calling, file sharing, Windows Live Contacts and integration with Windows Live services, such as Live search, Live mail and MSN spaces.

See: http://ninemsn.com.au