… Amazon.com’s new Kindle Fire offers a disappointingly poor user experience. Using the web with the Silk browser is clunky and error-prone. Reading downloaded magazines is not much better. …
The most striking observation from testing the Fire is that everything is much too small on the screen, leading to frequent tap errors and accidental activation. You haven’t seen the fat-finger problem in its full glory until you’ve watched users struggle to touch things on the Fire. One poor guy spent several minutes trying to log in to Facebook, but was repeatedly foiled by accidentally touching the wrong field or button — this on a page with only 2 text fields and 1 button. …
Jakob Nielsen – Kindle Fire Usability Findings
It will get better. In the meantime, get the OLD Kindle if you want an eReader.
via Daring Fireball

I have an iPad 2 & a kindle, last years model. Both are fantastic & I honestly feel the need for the two to be separate units. More expensive I know, but worth it.