I registered a new account. I have posted as Pekka previously, and I'll be now known as primal here. You could tell this from the IP addresses too, but I might as well admit it openly here.
I also got myself a Twitch account. I managed to stream game audio and good quality video successfully after a few not-so-good attempts. I have a few cosmetic issues to fix, which I will try to do in the coming days. I'll also see if I can get a microphone working some day. In other words, I am not streaming seriously yet.
I am
http://www.twitch.tv/mr_primal/
If you have a couple of minutes to spare, please check out the highlighted bit of Quake and tell me if there are any other significant problems with the video apart from the weird aspect ratio. That wasn't intentional.
I'm using simplescreenrecorder to stream on Linux. It was my first time using it. I'll write a few words later about how things work out, streaming from a Linux computer, and what kinds of streams I'm planning in the future.