Meta Stack Exchange has a nice side bar over when you are on the main page (the one you hit when you go to the 'meta' link, not the 'questions' tab).
It's great. You can see there is a 'faq' section, it's right there when you go to meta, and you can then go and dig into more faqs if you need to.
Per-site metas don't have this faq sidebar. A new user going to meta would have to know that such a tag exists and dig into the tags tab:
Then look around and see that faq isn't on the first page
and either type it in, or go to the second page to see it.
Many of you probably got bored looking at the pictures above. So do most users who should be reading the FAQ.
Make it easier for these users to find the FAQ posts. Put that 'Frequently Asked' sidebar on per-site metas too.