D-Joe on 09 February 2012
http://www.gamasutra.com/view/news/40227/Analyst_questions_validity_of_unusual_January_NPD_results.php
The group confirmed to Gamasutra, however, that Wal-Mart POS data was not included in the January report, and thus did not affect this month's software sales figures.
so NPD starting include Wal-Mart this month?
