``` The first and most obvious one was a filter of inappropriate words and expressions. I won't explain which ones or how it works inside, for obvious reasons, but it is quite effective. The machinery is in the heuristics.

The second, and most natural, was to cut the maximum number of characters way down. Less room is less ammunition to cover content and less space to hide a link. ```

- you forgot the third fix, disable copy paste inside chat boxes, remove all swear words by replacing them with **