I wonder if there's any direct correlation between increased number of ebook sales, and increased number of ereader device sales ?
For example, ebook sales up 30%, ereader sales up same, or perhaps a steady % of that.
It might show each new reader sold "consumes" a steady average figure of ebooks.
That might be quite an eye-opener, and of interest to the "market strategists", if there was any link.......
More specifically, it could perhaps tempt device suppliers, who also sell ebooks, to check their own stat's and try planning budgets accordingly ?
[ Ideally, but prob'ly too difficult, would also be a breakdown into pure ereaders, and other types of devices, like pads etc...]