Web ranking firm comScore released today its January 2008 Internet rankings of the fastest-growing site categories.

Tax, career, real estate, travel, and health-related sites all jumped in popularity, while Google jumped to the top of the heap for the first time as the most visited Web property.

Runners-up for most popular sites with Canadian visitors include Microsoft and Yahoo sites, eBay, Facebook, Wikipedia, AOL, Yellow Pages, Amazon, and Apple.