This has a similar issue to the way Reddit recommends subs itself. A sub will be considered similar if it's the exact opposite due to users of one sub going to

This has a similar issue to the way Reddit recommends subs itself. A sub will be considered similar if it's the exact opposite due to users of one sub going to another to shitpost or brigade or etc. I'm not sure of a fix for that, but would it be possible/helpful to weigh it by average upvote/downvote of the comments left from users of said sub? Meaning if sub A is about how much baseball sucks, and sub B is about how amazing baseball is, while determining if the 2 are similar you'd find out most posts from sub A to sub B are heavily downvoted and so probably not similar.