the Camera Raw controls are designed for doing capture sharpening.
There are two aspects of the sharpening in Lightroom 1.1 that I don't seem to be able to understand in the context of the global sharpening workflow:
-First, the capture sharpening is only one step of the sharpening workflow and I understand that it does not make sense to evaluate capture sharpening as a standalone procedure independently from the output sharpening (for the screen or another media). This was clearly explained by Andrew, the Digital Dog, in my recent post on this forum. Bruce Fraser also clearly states in his book that the capture sharpening is supposed to be a gentle first pass, which goal is mainly to prepare the file for the subsequent rounds of sharpening. It seems to me that when I am playing with the sharpening in Lightroom and even if I am sharpening for the web, I can't even evaluate the combination of the capture sharpening and the output sharpening
-Second, even if it made sense to visually tweak the capture sharpening without considering the output sharpening, looking at the file at 100% does not seem to be the best way to evaluate the actual impact of the sharpening, it is rather recommended to use 50% or 25% and we know that the sharpening is only visible in Lightroom at 100%
It seems then that two things would be required for this to make sense: Lightroom should be able to apply a correct output sharpening (based on the preview size) to allow for a proper evaluation and/or it should be possible to inspect the sharpening impact at other magnifications than 100%.