inli3u

Too bad they don't explain how it works. True real time jamming is impossible, but you can jam in pseudo real time by delaying everyone's audio by an entire measure. It's been done before by Justin Frankel: http://www.cockos.com/ninjam/. Actually I've always had dreams of recreating it as a web app... would be cool if that's what they did here.

Depends, but from an application and development perspective, which I'm sure most are assuming here, no. If you can remove nginx and still serve your site/application, then nginx is not your web server. If nginx is acting as a reverse proxy or a cache, then that is all it is.