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I've noticed in the news a bunch of stories reporting the sales figures for July. For example: http://www.gamespot.com/news/6177523.html http://www.tgdaily.com/content/view/33537/98/ They all state that the PS3 sold 159,000 units during the month of July. However when I look at VGChartz.com weekly numbers here: http://vgchartz.com/weekly.php?date=39271 PS3 sales, week ending July 8: 60,437 http://vgchartz.com/weekly.php?date=39278 PS3 sales, week ending July 15: 90,820 http://vgchartz.com/weekly.php?date=39285 PS3 sales, week ending July 22: 86,027 http://vgchartz.com/weekly.php?date=39292 PS3 sales, week ending July 31: 106,760 This would indicate that he total July sales is more like 344,044 units. (And that is not including July 1st) So what is going on? Which numbers am I reading wrong? Are the VGCharts weekly numbers shipped units? I know they are based on projections from retailers, so there can be some error. But to be off by over a factor of 2 is rather disconcerting. I'm if I'm not reading the numbers wrong, does this mean that VGCharts weekly numbers are totally unreliable? And if so, why even bother posting them?