Search marketers view Dynamic Number Insertion (DNI) or Dynamic Number Replacement (DNR) as required features for any call tracking purchased. Carlton van Putten explains that this piece of
Javascript code shows a different phone number on a Web site that is dependent upon the referring source. van Putten claims the strategy based on sessions is dying, and offers up other approaches to
DNI that can help marketers see through tracking phone calls from PPC or organic search.
Read the whole story at Search Engine Journal »