CPC Strategy’s latest Shopping Comparison Engine report shows Google’s grip on the market only tightened in Q2. Across performance metrics, Google PLAs (product listing ads) continue to outperform other CSEs by wide margins
Shopping search engines, or perhaps more properly, product and price comparison services, were one of the first specialized “vertical” search types to emerge in the early days of the web. The first services, like Andersen Consulting’s BargainFinder, were “intelligent..