EditorialGuy - 4:58 pm on Jul 6, 2013 (gmt 0)
Something to keep in mind:
The Web is about more than e-commerce. Just as important, ads offer plenty of diversity for the consumer, and the AdWords program has always been based on the premise that targeted ads can be useful to searchers (just as classified ads or traditional Yellow Pages ads were useful to consumers in the pre-Web era).
If I were an online retailer, I might worry less about getting beaten out of a no. 1 ranking by Amazon or eBay and more about the possibility that Google Web Search could follow the example of Google Product Search and relegate transactional listings to the advertising portion of its SERPs.