Athens.
I'm now in the business session of this first day of WebSci '09 - it brings together a variety of Greek business leaders and politicians. The session will be in Greek, but there's a simultaneous interpreting service - we'll see how that turns out. The first speaker is the representative of the Greek Minister for Development, who points to the importance of life-long learning, the decline of distance, and new modes of working which are associated with the move to a digital economy; this is also associated with new forms of e-commerce and electronically mediated cultural activity.

Athens.
Up next at WebSci '09 is Patricia Victor, who begins by noting the growth in recommendation systems, including, for example, the advanced functionality on Amazon and in other e-commerce applications. Some 60% of Netflix users, for example, base their viewing on recommendations, and Netflix has offered a US$10m prize for an algorithm that improves its recommendation system by 10%.

There are two classes of recommendation systems: systems which are content-based and systems which are collaborative filtering-based. The latter focusses on similarities in the rating behaviour of users, and trust-based systems are often based on such algorithms. Epinions offers such a social trust network, and also allows users to evaluate other users by placing them in their network of trust, thereby conferring particular importance on these users' trust ratings. This also alleviates the 'cold start' problem with new users; it provides more reliable and accurate recommendations and leads to a kind of trust propagation through the network.

Athens.
The first full day here at WebSci '09 begins with a keynote by NIgel Shadbolt, founding director of the Web Science Research Initiative (WSRI). As we're in Athens, he begins by taking the historical approach: he notes that another way to describe Web science is as 'philosophical engineering', which links back ultimately to the founding fathers of philosophy, including Socrates, Plato, and Aristotle. Their pure philosophical speculation, indeed, formed the basis not only for modern philosophy, but also for modern science.

Athens.
The second keynote this evening is by Joseph Sifakis, who begins by taking us through a quick tour of the history of informatics - starting with Turing and Gödel in 1936 and moving through information systems, graphic interfaces, the emergence of the Web and the information society, and leading today to the increasing embedding of computing systems into all kinds of technologies. In the future, we'll see further developments in computing power and storage capacities, and this means that computing systems will be literally everywhere. In developed countries, in fact, a person already uses some 250 different processors per day - processors in cars, computing equipment, home entertainment, telecommunication systems, and so on.

Athens.
Tonight I'm at the opening session for WebSci '09, and we're looking forward to a keynote by Sir Tim Berners-Lee, on the twentieth anniversary of his invention of the World Wide Web. The conference itself is going to be opened in the presence of none other than the president of Greece, though, so the place is swarming with Greek police (unsurprisingly, given the continuing low-level unrest in the country). In fact, there's a couple of secret service agents coming through right now, earpiece and all. His Excellency himself is running fashionably late.

Never go on holidays... Looks like a few days into my holiday on the Sunshine Coast, one of the electrical storms sweeping through Brisbane these days knocked out the server, even in spite of various forms of surge protection. Ah well - a motherboard replacement and some serious fiddling with Linux later (massive thanks to Nic Suzor for pointing me to the tip that enabled my successful necromancy), here we are again.

And while we're here, I might as well note that the audio and Powerpoint from my Interactive Minds presentation on 27 November are now online. I'm afraid the audio quality is, shall we say, 'for collectors only', but here it is, for what it's worth. This end-of-year IM event aimed to highlight trends in 2008 and predictions for 2009, and regular readers of this blog will recognise a few of my recurring obsessions. Many thanks to Jen Storey for the invite.

Sydney.
Up next at the Australasian Media & Broadcasting Congress is Robert Leach, Head of MCn Connect, whose interest is in digital television - and he begins by saying that interactive TV is now here; he finds it impossible to watch TV news without being able to 'press the red button' and get the latest news headlines. (Hmmm... Most Australians appear to use the Internet for this, rather than pay-TV?) Digital TV is changing rapidly. Does this mean the death of TV and TV advertising?

No, says Robert - we are watching as much TV as we ever have done, even though usage of other devices is also growing. Where the major growth area lies is digital video in its various forms. In the digital environment, devices have multiplied, but media are converging; the challenge for marketers and advertisers is to involve and engage audiences in video content. Where the Clinton campaign slogan in 1992 was "it's the economy, stupid", today the slogan for advertisers should be "it's the content, stupid" - if broadcasting or other media forms are declining, this is not the fault of technology, but of the content being broadcast. Great content will continue to attract a mass audience - but that audience may exist across a wide variety of devices from conventional televisions to online and mobile devices, scattered across time and space.

Sydney.
Matt Bruce from Nielsen Online is the next speaker at the Australasian Media & Broadcasting Congress; his focus is also on online advertising. There is continuing growth in the number of banners, advertisers, and campaigns online in Australia, as well as in the overall display advertising spend online. As of quarter three, 2008, the big spenders in this field of advertising continue to spend (even the battered finance sector); search advertising is strong and dominated by Google; even spending on Google image search advertising is in itself as strong as advertising on the next closest search engine.

Sydney.
The last afternoon at the Australasian Media & Broadcasting Congress begins with a panel session on the future of advertising. Paddy Douneen, National Advertising Director for Fairfax Integrated Solutions, is opening the debate by highlighting the difficulties established media companies are having in shifting advertising from traditional to online spaces, especially given the uncertainties of the current economic climate. He says that advertising in some traditional media is still very strong, especially now that car manufacturers and department stores have increasing backlogs of stock to clear because consumer demand is slowing.