Well apparently the original ones only really let you browse content but not interact but who knows what that new verson shown at ces will do. But many people only use the ipad to browse anyway eap professionals who need the keyboard and their maca to do proper blogging or word processing without making mistakes anyway. Here is the wony dash engaget description I found (but again the new chumby might be completely more interactive):
http://www.engadget.com/2010/05/01/sony-dash-review/
"When we first saw the Sony Dash at CES, we thought Sony was making a play into the tablet game -- the promo video showed people using the angular device all over the house, with nary a power cord in sight. And hey, it was called the Dash -- a word which usually implies movement of some kind. So obviously we were a little put off when we found out the Dash was strictly a stationary experience -- an amped-up alarm clock running a Sony-tweaked version of the Chumby widget OS that lets you look at photos from Facebook, browse headlines on Engadget, and check Twitter from the Dash's seven-inch capacitive touchscreen. But hold up: the Dash also adds in Sony's Bravia Internet Video platform to support streaming media services like Netflix, Pandora, and Slacker.
The Dash runs Linux, and most of the widgets run inside a Chumby OS layer, which also currently ships on the $119 Chumby One and $149 Chumby Classic. Sony's done some extensive tweaking to the system, mostly to take advantage of the larger display with more info-rich homescreens and a streaming media player, but apart from that, this is the same Chumby Engine you know and... probably don't know, actually. Let's start over: the Dash runs Chumby OS on top of a custom Linux build. Chumby OS is basically a Flash runtime, and Chumby widgets -- Sony calls them Dash Apps -- are little Flash modules that pull data from the cloud. These are the same widgets that owners of the old plush Chumby and the Chumby One are already well-acquainted with -- they're optimized for "glanceable" information. In addition to the Chumby stuff, Sony's added its robust (and exclusive) Bravia Internet Video streaming media layer, which enables apps from Netflix, Pandora, Slacker, Amazon Video On Demand, YouTube and a host of other providers. Yep, it's a big Flash-based alarm clock that can run widgets in the background -- bet you never saw that coming."