Applets for emails would make sense. A TPM that provided a clean template or persistent virus/worm/cracker-buster would be invaluable in my opinion. As an "add-on" to existing applets it would seem a no-brainer. I'm not clear about the tech required but it seems like a bright "geek" could get it put together without too much difficulty.
As for "No other choice"... I firmly agree. I can't imagine that anyone I know would want to do a deal in a back alley when the bright light of day could be brought to the transaction. That is how this feels to me. The wheat will be rapidly culled from the chaff. those who want to play nasty tricks or worse will be rapidly diminished in their capability. TPMs may need some tweaking to get there, but, a new age in computing is sure to emerge when INTC places the tools in everyone's hands.
I'm glad to know about WAVX.
Blessings,
Mahjah