Like Club Penguin, many online games for children have tried to place restrictions on speech, to prevent bullying, harassment, and predators. Kids have hacked them all. Tricks to evade moderators and swear filters include deliberate misspellings like “phuq,” separating out key information over several utterances so that no single utterance breaks the rules, and acrostics. Some sites prohibited users from typing numbers; kids responded by using words: “won” for one, “too” for two, “tree” for three, and so on. Same with insults: “lose her” for loser, “stew putt” for stupid.

