The new system, called Customer Match, works in the following way.
Companies upload the email addresses they want to target with Google online advertisements their. For example, they can upload emails from a part of their customer base.
So companies can acquire new opportunities for accurate targeting provided they are emails.
Google says the mapping is done "privately," but does not say what that means, and how it can serve personally targeted ads without compromising the privacy of the recipient.
The new Customer Match feature, if you have not already understood it, will allow companies to target new customers as long as they find emails that they do not have. This means that the new feature gives incentives to traffic email addresses.
Or even worse, think what material for a new clientele can find a company from emails leaked after some hack.
Let's say this time Google is not a pioneer. It is not the only company that gives advertisers targeting users with their e-mail address.
Facebook and Twitter do the same, but they restrict advertisers to just one product, while Google offers the new ad program on many different platforms.
The company allows opt-out of targeted ads from your account settings. However, this does not mean that it stops tracking your interests or can not identify with your e-ID, because you must be logged in to see your Gmail.
Of course, for the feature we described above exclusion of targeted ads will be much more difficult.
To see how privacy groups will react….