Alternative: if several accounts submit the same post, they each count as a +1. The OP could have a bunch of friends that submit the link at the same time, perhaps when he tweets it.
At least one other user admitted to it in an old post that made it to the front-page.
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[ 5.2 ms ] story [ 30.5 ms ] threadAt least one other user admitted to it in an old post that made it to the front-page.
The OP resubmitted with the correct link, which also got a suspicious amount of upvotes: https://news.ycombinator.com/item?id=22899816