[likeabatterycar]

Consider adding a mandatory keyword search when submitting a link - like every human-averse helpdesk.

Maybe if submitters see something was already submitted 800 times, they'll get the message; though, I have my doubts.

[matsemann]

There's already a feature so that when you try to post a link, and it's been posted recently, you're instead taken to that discussion and your submission instead counts as an upvote.

Doesn't solve the sameish story being posted from multiple sources, though.