Submitting duplicates is not impossible indefinitely, just for something like 12 hours. (And yes, it's quite random whether even a good submission ends up on t

Submitting duplicates is not impossible indefinitely, just for something like 12 hours. (And yes, it's quite random whether even a good submission ends up on the front page or not. But there's no point in complaining about it in the comments. Linking to earlier submissions mostly makes sense if there's interesting discussion there.)