As in previous years, Internet advertising recorded double-digit growth in 2013. According to SPIR estimates, last year's advertising expenditures in various forms of online promotion reached CZK 13.3 billion. This is more than double the figure (CZK 6.4 billion) for 2009. The increase in investments is reflected in all areas of Internet advertising. The largest volume is accounted for by display banner advertisements, and advertisers also amply use paid search advertising, content networks, classifieds and directories. Video advertising on the Internet is increasingly popular among advertisers, and sales of advertising in RTB automatic purchase systems recorded rapid growth. Of total advertising expenditures, online advertising accounts for a 19 % share of the advertising budgets in the Czech Republic. The data come from the annual survey of Internet advertising performance conducted for SPIR in January and February by the Ppm Factum Research agency.