[PatrickHenry]

You can make a post to "admin moderator" informing them of the accidental duplication, and request that the thread be pulled or locked. They may do nothing, but it's good form to rat on yourself.

For faster action you can do it with an abuse report, but that's over-reacting. Besides, you look like a great guy when you do it publicly.

[SeaLion]

I've already posted to 'Abuse', making a back up post here to admin moderator:

Apologies, I posted the article at the head of this thread, but now learn it had already been posted; my error, had not seen the earlier. Apologies, mea culpa, peccavi

Please nuke the thread--but hopefully not me!

[SeaLion]

you look like a great guy when you do it publicly

Hey, I am a great guy, but: Disclaimer -- this information may be legally false in Kansas

[muawiyah]

It really doesn't matter. The first post was days ago.

The dupes we all worry about are "same day" types. They are annoying.