A survey of marketing executives found that two in three allocate less than 10 cents of every marketing dollar to optimize on-site media to encourage Web site visitors to "convert" or take an action such as make a purchase or download a white paper.
Of 1,050 marketing executives surveyed, 42 percent said they are spending less than five hours per week optimizing advertising media such as search, e-mail, and display advertising, according to Omniture's Online Conversion Benchmark Survey released this week. "This may be too low, considering many companies are spending hundreds of thousands of dollars per month in advertising," the study suggests.
Astounding results and probably true for Australia as well. From experience we can say that companies in Australia still tend to focus more on the top part of the funnel (i.e. attracting cost effective traffic) rather than the bottom part (i.e. on-site conversion) even though the bottom part holds the most potential for overall conversion growth.
Clickz article
http://www.clickz.com/3634901
Omniture survey
http://www.omniture.com/go/23937