Originally Posted by Bob.Zune
Since the Kindle and Cybook Gen3 and Sony readers are all "relatively new," my general rule of thumb for equipment sold (ratios) is the comparing the number of people browsing each of the forums over a period of time (say every hour for a day or two, or same clock-time over a few days). Within a small percent error, this *should* give us the ratio of the number of units sold on each.
Perhaps it is too 'statistical' for some people.
I might be wrong, but from the screenshots I think the 5-inch astak is actually just a rebranded sony.
The only device they seem to really develop is the 9-inch one, which really looks quite different to the other sizes.