You bring up a valid concern - I'd say that this isn't something that you'd use all the time with your email, but it has its time and place (just like off-the-r

You bring up a valid concern - I'd say that this isn't something that you'd use all the time with your email, but it has its time and place (just like off-the-record gchat), and when it is needed, it really comes in handy.