OK I have an answer for brownie so far. Customer service with this company is LIGHTNING! Don't know how they do it!
They explained that the things on the side (called Widgets) are seen by everybody. And in fact, you can get code to embed them on your own site! So because they are seen by everybody and possibly even off our site, they do NOT include any posts from forums that are private or restricted.
So since W2S forums are private/restricted (you can only get in if we've manually marked you as 18 or older), they do NOT show up in that right side list. But if you go to the full page of topics (the Most Recent Active Topics link at the top of every page), you WILL see W2S there if you have access to it.