Hi mcclien,
just a couple of observations in point of fact, in case it helps:
- stylus: yes you can use other another stylus, the important thing is that you get a "penabled" one;
- registration: you are right that it is indeed very annoying, but you can get rid of that once and for all by registering your device OR by tricking it into thinking you have registered - if you search in this forum you'll find how (Unfortunately I do not rememebr how)
- "general page formation": I wonder whether the ghosting you get is excessive. I've set the screen to refresh every time (the trade off is, as for every e-ink device, with battery life), I know this works for page turns, perhaps also with the dictionary(I do not get the effects you mention with any of my devices)?
- machine hangs: this sounds surprising, perhaps there is something wrong with your unit? HAve you tried re-flashing the firmware?
- as for opening the back: after seeing the video I also thought it would be really hard, but the thing at the back is indeed a button, and by pressing that the unit opens really easily (and if I could open it, anybody can

)
- accellerator sensor: here I am not sure I understand what problems you have, do you mean the page does not turn when you re-oreint the device?
-Pearl screen: yes, real pity the Pocketbook does not have it!