Hmm. Yes, you're absolutely right on all counts. I'll change the text in the next release.

Truth is, I don't use Firefox myself; I'm not exactly sure what the procedure is for changing user stylesheets. How does this sound?

INSTALLATION (FIREFOX): You'll want to bracket this whole CSS file inside
    @-moz-document domain(slashdot.org) {
        [... CSS GOES HERE ...]
    }
before plopping it into your userContent.css. This rule will prevent the
code within the curly braces from affecting sites other than Slashdot.

Anything more specific to add? Where does userContent.css belong in Camino, Firefox, and Mozilla?