
According to this article published online on March 11th in Harvard Business Review/Slate, eBay has come to the conclusion that SEM - paid search - is a waste of money.
Do Paid Search Ads Work? - Slate
This has created a lot of discussion online, much of it consolidated here: AdWords “Ineffective” Says eBay, Google “Meta-Pause Analysis” Contradicts Those Findings - Search Engine Land
What are your thoughts?