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?
I have asked Rav Tzvi Berkowitz about using someone else's Costco card.
He said that it depends if the rules are attempted to be enforced or not. With costco where they check your card so you cannot use someone else's card even if you would get away with it, but BJ's where they don't check cards when you walk in and they have self check out, you can use someone else's. This is similar to how I have heard many times that you are allowed to go 65 in a 55 (including Rav Chaim Pinchas Sheinberg).
Regarding reporting someone else for breaking the rules, as long as there is one opinion that says its ok, you have no right to report them since they have what to rely on.
