“Medical Searches made up 45% of total online traffic”
That’s what Hitwise says, according to a recent report on search engine marketing. Online ad spending by pharma is predicted to be $2.2 billion in 2011, “up from $1.2 billion in 2008.
source: Take advantage of pharma sem: Your Rx for success. Dan Brough. Search Engine Marketing: Essential Guide. DM News. 2009