Haven't dropped a clanger, you were being asked whether you use an email
program to read your mail, and if so which one, or use IE6 and a web
interface to reach your mailbox.
No. What you don't want to reveal on a newsgroup or messageboard posting
is your real, unmunged email address. If you actually don't mind if
someone contacts you, you can munge your email address like
(e-mail address removed) for example. If you want privacy, then you can
just post a nonsense address.