If you search Google for XenForo addons then the first several pages show sites offering warez, nulled, banned developers. Only after a few pages there are legit addon sites listed. I was a little surprised to see this as it cant be good for XenForo as a whole. Its remarkable because resources on xf.com generally have links to the support sites of legit addon developers. So you would expect those sites to rank high in Google. Somehow something is going wrong there.