Driven largely by the popularity of the iTunes music service and software, Apple Computer Inc.'s Web site was the fastest growing last month among the major brands, according to a study by Nielsen/NetRatings.

The site drew 30.8 million unique visitors in November, a 57 percent jump from the 19.6 million a year earlier. Google Inc. saw a 29 percent growth in visitors while Amazon.com Inc. had a 16 percent boost.

Yahoo Inc. remained the Web's leading brand with 104 million visitors, a 10 percent increase from November 2004. But among the Web's top 10 brands, Yahoo's growth ranked only seventh.

Comparing all sites with at least 1 million visitors in November, the PhotoBucket photo-sharing site saw the largest growth — a 16-fold increase to 15.6 million visitors, from 983,000 last year.

Social networking sites MySpace and Facebook had the second- and third-highest growth, respectively. Wikipedia, an encyclopedia that lets volunteers add and change entries regardless of their expertise, was ninth on the list, nearly quadrupling its traffic.