Too expensive, and like Amazon Kindle, not enough pixels and too small.
1. It's much more expensive than the Kindle (less the pricey accessories), so a big mark-up to add needed SDHC support.
2. Like the Kindle, it has too few pixels to view a full page of border-less text, for even a standard paperback, and 6" screens are too damned small, especially in portrait orientation!
I'll wait for 8..10" eBook readers to tip up, with enough pixels e.g. nearer to 1Mega pixels, like the Kindle DX, and support for landscape orientation, maybe even roll up screens.
eBook screens really need to be multiples of Mega pixels, to be proper competition for physical books; you only have to look at limited resolution text printouts, image scans, camera macro shots, and to figure this out.