I'll repeat a message I posted earlier:
Yes, don't leave your real or unadulterated email address on the web.
Doing a google search for 'mung email hide' gives information like this
site:
<http://www.by-users.co.uk/archive/faqs/email/spam/>

I set up a NOSPAM pop account in my email client to reply to newsgroups. The
outgoing SMTP server address was the only 'real' thing in that account setup
to send replies. I left the incoming mail information section empty because
I 'subscribe' to newsgroups messages through another newsgroup function of
the email client. The account was set to use my special NOSPAM signature as
well.

Graham has this webpage also:
<http://www.gmayor.com/use_google_gmail_to_remove_spam.htm>