Here is the "classifications" of the most requested things on Google web-search engine during the 2005.
Very interesting this:
Google.com - Top Gainers of 2005 1. Myspace 2. Ares 3. Baidu 4. wikipedia 5. orkut 6. iTunes 7. Sky News 8. World of Warcraft 9. Green Day 10. Leonardo da Vinci
Very notable (for me, obviously) are wikipedia (4), iTunes (6) and World of Warcrafs (8). 1) Wikipedia is demonstrating its power: a good idea that I hope never die. 2) iTunes is demonstrating the power of music-selling on-line 3) WoW: Amazing. The greatest game of the last years.