First of all go to afreeca global : http://www.afreeca.tv/ and create an account
username : I didn't face any problem
email: my hotmail address didn't work, I had to put a gmail address as suggested, didn't try my naver one.
password : It seems that letter only is not working, the word afreeca seems forbidden and you can't put the email/username in your password
Then download their software.
Shouldn't be hard to install but here come the first surprise ...
For some reason I can't type an @ in the login part
Solution : use the visual keyboard of windows and manually insert the @
How to record :
Device => pick AfreecaTV window cam
Choose your resolution and bitrate and then click on Start broadcast
now click on " start capture " or the red dot BEFORE start recording or you will capture a blackscreen instead of starcraft II.
If anyone is interesting I could take some screenshots ( I have no idea who is really interesting/facing issues with afreecaTV as twitch is way more popular).