Wow, what a title...Google's vice-president and chief internet evangelist Vinton Cerf. The explosion in the number of people, devices and web services on the internet means there are only a few million left. The allocation of those addresses is set to run out very shortly but the industry is moving towards a new version, called IPv6, which will offer trillions of addresses for every person on the planet. "Who the hell knew how much address space we needed?" Cerf said. "It doesn’t mean the network stops, it just means you can’t build it very well."

Google's leadership shake-up Cerf said Google's surprise leadership shake-up was essential because the search giant was beginning to move too slowly. Today the company announced that Google co-founder Larry Page would take over as chief executive from Eric Schmidt, who has become its executive chairman. Until this point Page and co-founder Sergey Brin ran the company with Schmidt as a "troika". "'As we got larger it was harder for us to move as quickly as we would like so I think this is part of the whole practice of speeding up decision processes," he said. "Quick rapid execution is absolutely essential, especially in a highly competitive world like this."

Recent ex-Googlers who left the company to join Facebook, including former Google Australia engineer Lars Rasmussen, have said Google has become too unwieldy as it has grown. Schmidt gave similar comments in a blog post today, saying that, as Google had grown, managing the business had become "more complicated" and the trio had been "talking for a long time about how best to simplify our management structure and speed up decision making". Cerf said Schmidt, 55, had been chief executive for 10 years - "a nice round number" - and Page, now 37, was ready to lead the company into the future. "Larry and Sergey are 10 years older than they were when they thoughtfully hired Eric to be the CEO ... so everybody's growing up," Cerf said. "He was the only guy that stood up to them - these were two young, smart, incredibly brilliant guys who literally had just dropped their PhDs to go start this company."

It has long been held that Schmidt was brought on at Google to counter the lack of business experience of Google's founders, and Schmidt alluded to this in a tweet today. "Day-to-day adult supervision no longer need!" he wrote after the leadership change announcement. Taking on Facebook Cerf would not be drawn on whether Google was developing a social networking site to compete with Facebook, as has been rumoured. But he said "our interest is less in the social networking aspect as it is in the patterns of behaviour". "We really don't care about you personally we care about the patterns that you make. If we can match the patterns that you make with the patterns that the advertisers are trying to get in front of you, you benefit as well as the advertisers," he said.

"This is quite independent of the sort of things that go on in Facebook, which is more about personal information and personal interactions." Praising the NBN Cerf heaped praise on the National Broadband Network, saying Australia was making a long-term investment that would "serve you incredibly well in ways that even I can't figure out". "The idea of being able to export your talents without having to export your people ... this is a very attractive proposition," he said. "I honestly envy the political will to make this kind of long-term investment."

Google as ISP? But despite Google's work in building municipal Wi-Fi and experimental fibre broadband networks in the US, he said it was unlikely Google would ever become an ISP. "The intent is that as we build these [networks] out we will then turn them over to some other parties to operate and to make openly accessible," he said. "This is not our business model. Our purpose was to document what the costs and problems are ... we're not in the business of building physical infrastructure except for our internal operation." Asked whether recent privacy breaches at Sydney University and Vodafone - both of which kept detailed customer records online - highlighted the pitfalls of moving toward hosting everything in the online "cloud", Cerf said the cloud was not at fault.

"Just because it's sitting in an enterprise server doesn't mean that you're any better protected than you would be in the cloud," he said. "When you're in the cloud business you better be good at securing your systems otherwise you lose all your customers."