Does the Instapaper iPhone app do the stripping, or does Instapaper serve the stripped version? I'd say the former is illegal, and the latter is legal, though i

Does the Instapaper iPhone app do the stripping, or does Instapaper serve the stripped version? I'd say the former is illegal, and the latter is legal, though it'd be nice if a publisher could opt out and/or provide their own stripped down version that the app would use.