It is not only because having that information is practical. That information has value, even from a business perspective. So the idea was to keep the information as long as possible. When the commissioner said that you were breaking the law, one of the issues pointed out was the lack of valid consent for communicating personal information to advertisers. That is worth something. So it pays off to keep the information as long as possible. I hope you have resolved that issue.
On November 6th, 2012. See this statement in context.