Approximate size of SEM

Search Engine Marketing

[pros]

What is the approximate size (in US$) of Search Engine Marketing industry?

[semcommonsense]

This is what was publicized by SEMPO recently:

# The North American SEM industry grew from $9.4 billion in 2006 to $12.2 billion in 2007, exceeding earlier projections of $11.5 billion for 2007.
# North American SEM spending is now projected to grow to $25.2 billion in 2011, up significantly from the $18.6 billion forecast a year ago.
# Marketers are finding more search dollars by poaching budget from print magazine spending, website development, direct mail and other marketing programs.
# Paid placement captures 87.4% of 2007 spending; organic SEO, 10.5%; paid inclusion, .07%, and technology investment, 1.4%.

[sempo.org...]