Just to be clear, local and 1-800 call tracking phone numbers have been used by the biggest and most well-known companies in the U.S. and worldwide to track the effectiveness of marketing campaigns for more than a decade. In bound call-centers may not be familiar with how they work, but outbound call centers (esp. ones that use insidesales.com
, etc) and online marketers are very familiar with local phone number dialing technologies and call tracking phone numbers. If they weren't used, it would be much more difficult to track the marketing effectiveness of billions of dollars in advertising and many call center folks would be without jobs. I wouldn't trust an online marketer who doesn't use them to track the effectiveness of PPC campaigns, at least for campaigns where the goal is to generate phone calls. Just like you don't "own" your online advertising data or your Google analytics data, you also don't "own" your call tracking data, but you certainly can access it, download it and use it at any time.