Nielsen is going beyond trying to track everything you watch
to tracking everything you buy -- adding data from what an executive said is
"virtually all" credit and debit-card purchases plus bank statements,
including online bill payments and paper checks, to what it already gets from
food and drugstore purchases.Nielsen is anonymously matching all that data
through an undisclosed third party to members of its TV ratings panel, an
executive of the company told Advertising Age, and plans to expand such
matching to online and other measurement services
