Complaining because people are nice enough to give out free codes seems a bit excessive imo, it's not something that happens often enough to say it's clogging up the thread imo, but maybe we should restrict the "quote this post" to actual devs (Like Mario, Milla, Cromulent & co...) and leave "quote to reveal" for giveaways by "normal" members. To post 'em straight away just means lurkers will get them and that usually brings a lot of complaints, and you also can't ask people to commit to reply to tons of PMs asking for codes.
It's not my call to make, but I think it's perfectly fine to post 'em in this thread and definitely welcomed by the majority, I also think it's awesome that so many devs post in this thread.
I think it's only fair to let the game at least shine on one page for a few posts with this kind of rewards, it goes down as a good thing both ways. It never bothered me, quite the opposite, but that's just me.
Just my two cents of course, not some rules to follow.