And what would that achieve in that case? Nothing! Just as not being on Facebook achieves nothing — you'll just be completely defenseless if someone tags you i

And what would that achieve in that case? Nothing! Just as not being on Facebook achieves nothing — you'll just be completely defenseless if someone tags you in an image (which is horrifying — as far as I'm concerned, the only acceptable solution is to allow only tagging of actual users, and only the ones who consented to that).