XenForo.com/community seems to be regularly spammed these days, seems at least a couple of times a week it's been spam attacked before mod cleaning occurs. Are the core/in-built spam registration and posting counter measures falling behind? Or are Xenforo.com just being particularly targeted (or lax/allowing in deployment of their core counter measures)? What are other XF 2.0 sites using for their anti-spam measures? Are the core features working well, or are you having to utilise add-ons? If the latter, which one(s) are you using?