"send unencrypted" pop-up notices

[joe]

Recently, I've been seeing a lot of pop-up message from different programs 
warning me that the messages I am about to send are unencrypted, and asking, 
'send unencrypted?" This seems like a great nuisance, and I'm planning to 
click the box that says, "don't show this notice again" ... but before I do, 
I thought I'd ask if any/many of you Pluggers are encrypting all or many of 
your email and other messages sent via the 'net?