You'd have to be pretty vigilant, and it would require others to do the same. There'd have to be an equal, or greater, amount of photos tagged as another person. Who is this other person, anyhow? Where's their account? All data says it's Jill_the_Pill, so she must use pseudo-names. Flag her account for further investigation.

It's best to just stay off of Facebook if you care at all about privacy. At least, that's the underlying message that I get from this, and every other story I read about the site.