I just failed this review audit. This post looked good; very concise. However given that the question had 5 other answers, I thought the odds of this post being just a repeat of information in another answer was quite high.
I opened up the question, and the very first answer was the same as this one, word for word, and highly upvoted. Aha! I thought to myself, someone plagiarising for cheap rep. And I went to flag.
But as it turns out, the duplicate answers were one and the same, anonymised for the review.
I tried to have a think of ways to prevent this occurring, but I have to admit I'm drawing a bit of a blank. Does anyone else know of a way?
n.b.: I'm aware that a small amount of false positives as a price for catching more robo-reviewers is pretty reasonable, so if this isn't easily fixable I guess that's fine.