Search Engine Marketers Spent $5.75 Billion in 2005.

USA and Canada are the biggest markets when we are talking about search engine marketing (SEM). According to “The State of Search Engine Marketing 2005″ report released by SEMPO advertisers in USA and Canada spent $5.75 billion on SEM, mostly on paid placement. They predict that SEM spending in North America will reach $11 billion in 2010.