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Check the "hot trends" list and see if there's any change from last year. iTunes seems to dominate the list of popular queries: [www.itunes.com downloads], [itunes download], [itunes store], so Apple's iPhone and iPod continue to sell well.
According to Google Zeitgeist, the fastest rising query for 2008 was [Sarah Palin], followed by [beijing 2008], [facebook login], [tuenti]*, [Heath Ledger] and [Obama]. Google continues to be popular: [orkut] is the most popular query in Brazil and India, [youtube] is the most popular query in France, Spain, Italy and Mexico, the fastest rising query in Denmark was [google oversætter]**, while in Australia, the home country of Google Maps, the third fastest rising search was... [google maps].
* "Tuenti is a Madrid-based, invite only private social networking website that has been referred to as the Spanish Facebook," according to Wikipedia.
** Google Translate