Any page in the Talk: namespace can be added to this forum by adding {{Talkforum}} to the page.

AlternateEdit

Here is an alternate version that lists all pages in the Talk: namespace. This has the benefit that nothing has to be added to put it in the list, but it only includes pages from the Talk: namespace, and they don't have the neat thread nav at the top. Also, it somewhat duplicates the functionality of choosing "Talk" in the namespace dropdown box of Recent Changes.