Google announced "iPhone" was the fastest-rising search query on Google this year, followed by Webkinz, TMZ, transformer toys and YouTube.
Apple rolled out the iPhone, a device that serves as a mobile phone, a music and video player, and an Internet browser, in the United States last summer.
Four social-networking sites made the top 10, including Webkinz, which grabbed the No. 2 slot. Webkinz is a stuffed animal that customers can register and play with online.
Celebrity news Web site TMZ ranked third, while transformer toys took the No. 4 slot.
Transformers are the wildly popular toys that shift their shapes, for example, from cars to alien robots, and they got a big boost from the 2007 hit movie Transformers.
"There's a lot of interest in the celebrity culture, television, and movies," Mayer said.
YouTube, the video-sharing Web site, grabbed the No. 5 spot, while Club Penguin, a networking site for children, came in No. 6. Social-networking site MySpace took the No. 7 slot. Heroes, Facebook, and Anna Nicole Smith rounded out the top 10.