1. "Silly, random, and off-topic discussion" refers to topics, not posts. Random topics are allowed and encouraged; posting the same meme post in multiple threads is not.
2. Respect thread creator's wishes. This means you shouldn't actively try to derail threads. This also means that the OP has some measure of control over thread progress and OP's interpretations of thread rules will be given extra weight. Posts not in the spirit of the thread OP can be reported to the staff.
3. Do not break the site. In particular, pages and pages of animated .gifs or posts with extremely long words that break site formatting are not allowed.
4. Follow the general rules of the site. Pornography, personal attacks, trolling, etc. is not allowed.
5. The crazy catch-all rule. These rules are not immutable and are subject to change if the situations requires it.
6. Do not try to exploit the rules. In case that wasn't clear already.
Prior content, acceptable under the old rules, will not be subject to punishment but might be deleted without notice.