[baddox]

> The thing is, tunesmith wasn't talking about a perfectly tuned equal temperament guitar. We're talking about tuning a guitar by ear so that one chord is sounds perfectly in tune (i.e., is in just temperament), then trying to play a different chord.

When I reread your comment, I realized that this is what you were talking about. In that case, you're absolutely right. Although it is a pretty bad idea to tune a guitar by ear by playing a single chord. Not only will other chords sound out of tune, but even slightly different voicings of the same chord. A guitar that's designed for equal temperament really needs to be tuned as such. Correct me if I'm wrong, but I think the standard ear tuning technique (where you match the 5th or 4th fret of one string with the open string under it) will give much better equal temperament results.