Haha, yes. There is a computer program that automatically bans you if you type certain words, or if you share links. At first, this was annoying, but now I understand that the challenge of moderating a forum like this, in all the languages of the world (simultaneously!), is quite difficult. This app / website has a very low amount of scammers compared to other forums or bulletin boards, which is impressive even if the forbidden words software can be a little "over-zealous" sometimes. Also, I should tell you that I don't think you can read the rules anywhere. You simply wait until you bump into a wall, haha. In general, avoid writing about topics that could be considered controversial. Good luck!

In the private teacher forum, there are related discussions from time to time. Here is a link to teacher guidelines in various languages: https://support.italki.com/hc/en-us/articles/900000089723-New-Teacher-Handbooks