If you're going to have a pie forum, you're going to have to have a pi thread. So, if allowed, i suggest each person who is bored enough to post something, post the next 10 digits of pi and the post number. To find the next digits, multiply your post number by 10, add 1, and find them with this nifty tool. Note, the first number (3) does not count, because that tool skips it.
