This article is really hard to decipher: But the point seems to be that SkyNetGlobal, a Wi-Fi operator in Australia, is preparing to support voice on its network by working with a clearinghouse, HotSpot Global. It seems that the clearinghouse will support roaming for users of Wi-Fi enabled phones, but it's not clear if the idea here is to let customers roam from one operator's network to the next or just to let customers roam within one service provider's network. Regardless, the interesting point about the article is that SkyNetGlobal is eager to enable voice on its Wi-Fi network as competition to 3G cellular networks.