Basically it is all in the title, I'm not new to this website but I haven't explored it so much, I just realized that there are commented games available for free lol.
Also I think that credit reward thingie feels off to be honest, will I just have to post pretending to not spam in order to view more commentaries? Also, thanks for these 200 credits that I received.
Assuming you mean the games at http://www.go4go.net/go/commentaries, they are commented by Alexander Dinerstein who is one of the top European players (won the European championship many times in the 2000s) and received a 3 dan pro ranking from the Korean baduk association. He's a solid European 7 dan level: http://www.europeangodatabase.eu/EGD/Player_Card.php?&key=10313237.