From: Tony L. Svanstrom <tony(_at_)svanstrom(_dot_)com>
As it is today it would be easy for my employer and/or government to keep
copies of all communication that enters and leaves their network; that
information could be used to create a "map" of my network of friends.
If we were all using PGP they wouldn't be able to read what we write, and
it would be very easy to set up and use some kind of remailer; but even
if we were to do all that they still would be able to create that "map" by
searching all e-mails for our signatures.
No. The signatures are encrypted along with the message.
Ian.