1) You're not going to be added to "a list" because you clicked a link on hacker news. Remember that the NSA employs some of the smartest people in the world. Would it be meaningful to add a bunch of curious silicon valleyists to a list of "possible terrorists"? Probably not.
2) If you think that an aircraft that is anything bigger than a small pigeon could get anywhere near a major airport without getting itself a nice escort, then you're nuts.
Here is a map of the airspace near JFK: http://www.aeroplanner.com/notams/airspace.cfm?apt=jfk
This is all "Class b" or "bravo" airspace. It's all heavily controlled, heavily monitored with radar, and you have to ask permission to enter it.
It's incredibly unlikely that there was a "drone" in bravo airspace. Possibly a UAV, definitely not the boogey man Iranians.
3) This website doesn't even say anything. It's some pictures that could have easily been photoshopped together. Google translate isn't giving me anything interesting, and unless HN is a LOT more diverse than I realized, you're all going nuts over a couple of grainy photos.
Finally, here is what the drone that Iran supposedly "captured" last year looks like: http://i.imgur.com/ALveZWi.jpg
It isn't a toy. It's huge. There is no way that is getting anywhere near a RADAR without everybody knowing about it. Yes, it is [possibly...meant to be, rumored to be] stealth. That doesn't mean it's going to go undetected into a major airport like that.
Relax. Go have a beer.