If I know that a certain user of a website is breaking the rules, can I just turn a blind eye, or must I report it? Also,
Does it matter what kind of rule it is? (E.g. No swearing vs. age requirement)
Does it matter if it's socially accepted in that community to turn a blind eye? (See, for example Are moderators required to report users younger than 13?)
Does it matter if the user is Jewish or not?