I think that it is useful to have the faq available onsite, even though most of us know how to read the local copy on our home computer. Of course, the ideal would be for somebody to update the faqs and perldocs, but that is a pretty big job.
Since we're relying primarily on perldoc, maybe the link in the sidebar could go straight to perldoc's faq page. This has the disadvantage of hiding the mountain of potentially useful (if old) information that already resides here, though.
If updating the local copies is out of the question for the time and utility, I wouldn't object to the "link to perldoc" solution. Maybe then we would need a special perldoc-linking bracket format, to answer the FAQs that show up in SoPW, though.