One of the earlier stories ever submitted:

https://news.ycombinator.com/item?id=348315

Here are a few more:

https://news.ycombinator.com/item?id=407443

https://news.ycombinator.com/item?id=818955

https://news.ycombinator.com/item?id=1814047

https://news.ycombinator.com/item?id=2211093

https://news.ycombinator.com/item?id=2211358

https://news.ycombinator.com/item?id=3711451

https://news.ycombinator.com/item?id=4671783

https://news.ycombinator.com/item?id=5837876

https://news.ycombinator.com/item?id=5837886

(Including, I admit, one from me)

Interestingly, none have generated interesting discussion.

There's also "Near-Field Authentication over Avian Carrier"

https://news.ycombinator.com/item?id=4422155

But that's something entirely different.

so? did something change since April 2011 that you suddenly post this?

Sorry. Next time I'll search prior posting, you can delete this link.

You did nothing wrong. People post older material all the time. Those are some of the best posts. And the GP was being a jerk, which actually does violate the site guidelines.