Talking about 4chan, I really love how this site seems to be a mix of some kind of IRC and imageboard.
It's also bringing back memories of some DC++ rooms I used to visit when it was the best way to share files.
Yeah DC++ and i2hub were both awesome. Both got my internet privileges taken away for a year by my university for internet misuse. Good times.
As far as I know, it originates from the /g/-board there.
Or the HN community has some crossover with the 4chan one.