I have had three requests for a quick-start guide to using CPAN, and no less than the estimable Bill Stearns suggested I put it up on the list. So if you don't like it here, blame him. ;-)
Sounds like good Wiki material. I threw up a placeholder for "packaging" in section 5 here:
<http://wiki.apache.org/spamassassin/DevelopmentStuff>
Sounds like both CPAN and RPM should be included there.
(I'd suggest that the main Wiki page could also use an "Installation" link before the "Using" link, that in turn references the packaging pages.)
