I was really inspired after the video and decided to go help out in some IRC channels and mailing lists.

And then I was reminded why I stopped doing that a long time ago: there is so much snarkiness. None of these lists or IRC channels ever seem to take a stance against this behaviour and it seems to me as if there are often self-selecting groups of snarky "locals" who drive a list or IRC channel.

On the contrary, I do think that HN is fairly close to what he was describing and is the main reason why I've stopped frequenting other similar sites, but remained here.