Online retail websites experienced significant growth in November as the holiday season officially kicked off, according to a new report from comScore.

Among the top gaining retail sub-categories were toys, consumer electronics, and department stores, each growing more than 30 percent compared to October. Toys sites attracted 27.4 million Americans during the month, representing a 33-percent increase from the previous month. Toysrus led the category with more than 14.8 million visitors (up 82%), ranking as the fourth top-gaining property in November. The LEGO Group landed in the second spot in the toys category wit 3.8 million visitors (up12%), followed by Disney Shopping with 2.6 million (up29%) and AmericanGirl.com with 1.9 million (up 44%).

"November marks the official start of the holiday shopping season as millions of Americans search for gifts and deals both online and in stores," said Jack Flanagan, executive vice president of comScore Media Metrix.

"With nearly 4 out of 5 Americans online visiting a retail site during November, the Internet clearly represents an increasingly important channel for retailers during the holiday season and beyond."

Consumer electronics sites grew to 52.8 million visitors during the month, a 32 percent increase over October, led by Best Buy with nearly 25 million visitors and Walmart Electronics with 9.9 million visitors (up 139%). Radio Shack ranked third with 5.1 million visitors, followed closely by eBay Electronics with 4.8 million visitors (up 12 %) and Buy.com with 4.4 million visitors (up 11%).

Online department stores saw a 33 percent gain, reaching nearly 81 million unique visitors in November. Walmart led the category with 46.2 million visitors (up 62%), followed by Target with 38.8 million (up 43%), Sears with more than 19 million (up 36%), JCPenney with 15.4 million (up 34%), and Macy's with 12.7 million (up 38%).

Online shoppers flocked to coupon sites, making it the #3 gaining category in November, growing 33 percent to 37.5 million visitors. Coupons, Inc. landed in the top spot with more than 8 million visitors (up 9%), followed by EverSave.com with 5.3 million visitors and RetailMeNot with 5.1 million (up43%). BlackFriday.Info experienced a huge surge in activity, increasing more than 1,000 percent to 5 million visitors. GottaDeal.com saw traffic increase 955 percent to 1.8 million.

The month of November saw online spending increase 10 percent versus a year ago to reach nearly $12.3 billion in sales. comScore noted that the comparison is against a very weak November 2008, due to the economic crisis. Black Friday hit $595 million in online sales, an 11 percent increase over Black Friday 2008. Cyber Monday reached $887 million in online spending, up 5 percent compared to a year ago.

Google sites led the U.S. search market in November with 65.6 percent of the search queries conducted, up slightly from October. Yahoo trailed with 17.5 percent share (down 0.5 points from October), and Microsoft at 10.3 percent (an increase of 0.4 points from October). Ask grabbed 3.8 percent of the search market, followed by AOL with 2.8 percent.

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