Good NEWS!
Google is finally giving some much needed love to forums that are compliant with the appropriate microdata, and XENFORO IS!!
Now, when you do a search in Google, the forum and discussion option is available again (I think it was before, but not featured).
I just noticed a Google search for XenForo permissions brought up a post that had only just been made 8 minutes previously, along with quoted part of text from a response only made about 2 minutes previously. Astonishingly fast.