I was thinking about implementing https sitewide when I finish my conversion to XenForo, but I wonder what kinds of headaches I will have. For example, the recently released Firefox 23 blocks any active content requested via http from an https page. For XenForo, I assume if users embed a YouTube video, the Iframe src will be http, and the content would be blocked. I can't test that in the test forum here, because XenForo.com redirects https requests back to http. And I don't have a real certificate yet to test on my site. Is anyone running all-SSL at the moment? What kinds of issues have you had?