[YetAnotherMatt]

> There is a chat group of a few dozen authors who in subsets work on common topics and carefully ensure not to co-author any papers with each other so as to keep out of each other’s conflict lists (to the extent that even if there is collaboration they voluntarily give up authorship on one paper to prevent conflicts on many future papers). They exchange papers before submissions and then either bid or get assigned to review each other’s papers by virtue of having expertise on the topic of the papers. They give high scores to the papers. If a review raises any technical issues in PC discussions, the usual response is something to the effect that despite the issues they still remain positive; or if a review questions the novelty claims, they point to some minor detail deep in the paper and say that they find that detail to be novel even though the paper itself does not elevate that detail to claim novelty. Our process is not set up to combat such collusion.

Verbatim from the article.