Google's Zeitgeist list are to be believed. The momentarily famous "Friday" singer topped Google's annual year-end list of hot search terms, followed by the software giant's own Google+ social network and deceased Jackass star, Ryan Dunn. The top five is rounded out by the acquitted Casey Anthony and the ultra-hot FPS, Battlefield 3. Apple made three appearances in the top ten, courtesy of the iPad 2, the no-show iPhone 5 and its late founder, Steve Jobs. On the other side of the coin, social networks Myspace and hi5 topped the fastest falling lists. Celebrate the year that was with a video after the break.