I will be 100% honest and admit that I have broken a few rules but it wasn't intentional. I was sent warnings and moved on. I do my best to not break that rule again.
I have told people (newer members) to NOT reply with "sold". I explained that they should "edit" the "original post" and replace the price with the word "sold". They then say "I don't know how to do that".
It's amazing how they took the time to figure out how to create a new thread and list something for sale. However, they can't take enough time to figure out how to "EDIT" the thread they created.
I honestly think that anytime a new person tries to register they are FORCED to read the rules. This could be done by making them take a questionnaire and pass. If they fail then the registration will not be accepted. The questions should never be the same.