So right now it looks as if Valve is trying to close the one of the communication channels, which they just cannot control.
Currently the mailing list is accessible to everyone subscribed to it and sending a mail to one address easily starts any discussions about specific topic. Well, the fundamental rules of the mailing lists are: free speech and obedience of the netiquette. I don’t remember if there was any trolling or flaming on discussion lists – frankly speaking the people subscribed to the list represent higher intellectual level than most of the forum users. Not to mention that some people just don’t even know what the mailing list is, I guess that was just keeping specific users from getting into the mailing lists ;)
But as we’ve already seen on Steam forums, Valve is really eager to censor everything. We will see if people from mailing lists are going to be so active on the forums and see the responses of the forum trolls. I hope the new forum sections will not suffer from too zealous moderators.
We will be shutting down the HLDS mailing lists on Friday, February 20th. After February 20th, all server discussions should take place in one of the forums listed below. Windows server discussion should be conducted here: http://forums.steampowered.com/forums/forumdisplay.php?f=44 (Source) http://forums.steampowered.com/forums/forumdisplay.php?f=16 (Gldsrc) Linux server discussion should be conducted here: http://forums.steampowered.com/forums/forumdisplay.php?f=45 (Source) http://forums.steampowered.com/forums/forumdisplay.php?f=19 (Gldsrc) If you have not already done so, please register a forum account<http://forums.steampowered.com/forums/register.php> .. NOTE: The mailing list archives will still be available for viewing. -Burton Johnsey Valve Software
And if you’re on their mailing list you can check it yourself.