According to a recent report from Adobe, search is still “the biggest driver of return on investment,” in regards to advertising. The quarterly report, entitled “Adobe Digital Index: Global Digital Advertising Update,” stated that compared to Q1 in 2011, search …

Things are looking great for the online advertising industry. Several recent reports share data that is quite optimistic for the industry as a whole.

eMarketer points to research from GroupM, which claims that digital spending will be at 17% of total US ad spending in 2010. This would be an increase from 15.4% this year and 13.9% in 2008. GroupM also predicts 4% growth in US online ad spending in 2009, to $22.77 billion.