Here's the post that you reposted http://funsubstance.com/fun/363260/yes/
I want to see how he stole your post 4 weeks ago. Still want more proof?

Wow, sorry about that @zeus
I think the trouble is you don't always see or know if someone has posted something you intended to post before.
My apologies!

There's supposed to be an auto-detection system where if your picture looks too similar to a previously-posted one, you have to promise it's not a repost.

@banana Yes. That's how we know when someone reposts intentionally.

Except it doesn't appear all the time. It's happened to me and now it's happened to this user.

It'll register in our logs if the user was shown the message. If you didn't see the message we would just say "repost" instead of "deliberate respost..."

Is there anyway to increase reliability?

I wish I could. Going any further than this would require advanced AI.

Thank you for explaining this.
at least now we know.