Advertising Expense
We incur advertising expense consisting of traffic generation costs from search engines and Internet portals, other online and offline (including television) advertising expense, promotions and public relations to promote our brands. We expense the costs associated with communicating the advertisements in the period in which the advertisement takes place. We expense the production costs associated with advertisements in the period in which the advertisement first takes place. For the years ended December 31, 2013, 2012 and 2011, our advertising expense was $236.5 million, $175.0 million, and $135.6 million, respectively. As of December 31, 2013 and 2012, we had $1.3 million and $1.4 million of prepaid marketing expenses included in prepaid expenses and other current assets.