Web sites racked up $17.6 billion in retail sales in the third quarter, according to estimates released Friday by the U.S. Department of Commerce.

Online retail sales are likely to surge in the last quarter, boosted by holiday shopping. Recent studies have predicted that Web site purchases will total between $15.1 billion and $15.5 billion this holiday season, up by between 23 percent and 26 percent from November and December last year.

Read more: CNet News report.