Volunteering for OSS == Sign Up for Spam?

bckspc asks: "I've been getting pounded by spam lately, so did a Google search on my email address to see where it might appear on the Web. To my horror, it turned up several times in an archive of a Gnome listserv for a project I briefly participated in. While the email address is visibly obscured on the Web pages, it is quite intact in the HTML code. I emailed the list admin about obscuring or removing my email address, but was curtly dismissed. I'm a relative newbie and the experience soured me on participating in other OSS projects. How to Slashdot users deal with this? Must I set up disposable email accounts for every list?"