Change the Rule is a poster below you game. You set the rule for the next poster while following the rule set by the above poster. If 24 hours passes with no posters, a new rule can be implemented.
Example:
Player1: The poster below me must post in ALL CAPS.
Player2: TPBM MUST TELL ME HOW AWESOME I AM!
Player3: P2 is so awesome that TPBM cannot user the letter 'e', because we need two of them to spell 'awesome'.
Since, I'm the first poster, I'll start:
The poster below me must have the letter 'a' in their username.
The p-p-p-p-perthon b-b-below m-m-me m-m-mutht t-t-tranthlate wuh-wuh-one w-w-word of their p-p-potht in-in-into a l-l-lang-lang-language-language other-other th-th-th-than.... other than Eng-Engl-English.