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			They didn't say, but my guess is they won't include free books.  In a lot of cases, free ebooks are promos anyway. 
 
They are tracking sales through many sources, including a variety of retailers, not just the publishers. 
 
Small publishers may see more ebook sales relative to their own print sales, but I doubt that a small pub will still enough relative to other ebooks to land on the charts, unless that particular book is massively successful anyway.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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