Did you do your holiday shopping from the comfort of your computer? It seems many did.

Online sales from November to the end of December hit $37.2 billion, a 15 percent increase over last year’s holiday sales and an all-time season high, according to research company comScore.

Cyber Monday brought in $1.2 billion in sales, up from $1 billion in 2010. It was the single day with the most sales.

ComScore reported that consumers were lured by free shipping, which was offered on more than half of all purchases. (Free Shipping Day, on Dec. 16, accounted for $1 billion in sales).

That’s good news for online retailers, and for FedEx and the United Postal Service.

Those companies hired more workers this year than last year, and expect to handle many returns throughout this month, according to this New York Times story.