A logistical suggestion, for those trying to avoid caps:
I personally find using bold or italics to be cumbersome. I type very rapidly, and stopping to move the mouse around is really hard.
I use odd characters before the word, like *this* or maybe -this-.
I find it faster, and it still emphasizes the word without the caps. (Interestingly, in Microsoft Word, and I think even in Outlook, if you put *'s around a word as I did, the software will automatically change it to caps.)