I don't understand what is and isn't within the rules, and I've never gotten an answer when I've asked.
NYTO: A simple game with no central discussion or topic. Goes on for what, a year and 40 pages?
Type Without Your Hands: A simple game with no central discussion or topic. Goes on for what, 2 days and 4 pages?
There is a picture of a goat in this thread.: A simple discussion about a topic that was semi on tract. Goes on for what, a day and a half + 8 pages?
What are you reading?: A simple discussion about a topic that was semi on tract. Goes for what, a year and a half + 40 pages?
Then there are those threads that are on topic for 4 pages/a day then go off topic for months.