mmmh, I do not plan to have the discussion-posts on the wordpress-pages. There will only be a link to the xenforo thread and the discussion unfolds there. So I would like to have the wordpress node indexed for the original news-post and the xf-thread-node for the discussion...
BUT If I would be forced to choose because I could only have one, I would only want to have the WP-nodes indexed, not the xf-threads.
So:
the automatic XenWord-threads will be in a specific xf-subforum. Do you think, I can put a nofollow on the branch of the forum (how?) and google will be happy?