Marketing and advertising efforts primarily consist of search engines, online display, affiliate programs, direct online marketing, social networking and public relations.

20152014201320122011
Net advertising spending (MM)$27.1$25.0$24.3$21.0$16.9
Net advertising spending growth8.4%2.9%15.7%24.3%16.6%
Net advertising spending % of total revenues5.6%5.3%5.4%5.2%4.9%