Up to you no one is stopping you.

Personally I don't value most of the stuff I give enough to care.

only time to not say thanks on an individual GA is if you win 2+ from the same person.
you say thanks for both(or more) at the same time to not clog up the other persons inbox.

I consider it more a red mark towards blacklisting, not the action(or lack of) that triggers the blacklisting though.

Everything is blacklist worthy.Every- and anything!
If you want to try the feeling, blacklist me, wait a day and think about if I should stay there.

Take a look at the Pleiades in the meanwhile.

View attached image.

Personally, Yes absolutely and I did it twice already in my 3 months on this site.

Personally I think it is the right thing to do, but I don't know if I would blacklist someone over not doing it. I think it would also have something to do with the value of the game for me? (not necessarily monetary, but also if I say it's something I'd love to see played etc)

There's only one category of people on SG that annoys me lately. People who don't play games at all.They enter the giveaways for +1 or to farm cards, but they don't play anything or play thousands of hours in some FTP games. That's why I started adding them to the BL

Someone is giving me something for free? Well the least I can do is thank them and be grateful that they used their time and resources just for me.

I find it weird to receive something (you wanted) for free and not say thank you.

Each one that don't have the basic manners to say thanks after he got a game from me for free, get added to my blacklist.

At least in the theory because the BL have only space for 1k accounts.
Which means i add only lvl 5 accounts to it, the 1k are still not enough for all of them (it is always full), and i do, nearly, only lvl 5 GAs.

Oh and it don't make a difference for me if it is a cheap crap game or a expensive AAA game.

In the most cases are this users leechers on top.
And sometimes autojoiners and/or multiaccounters.

At the very least it's incredibly impolite, yes. Not that hard to type a simple thanks for a win.

Personally I'd rather not see the notification of a thanks than care about being thanked, but seeing the results I guess I'll try to do better leaving a thanks for others.

Personally, I always say thank you (I admit, sometimes it takes me a while), But while I appreciate the people that say thank you for my gifts, I never blacklist them

I remember when I first signed up I used to thank people for hosting giveaways for games I wanted, and ended up on a bunch of blacklists (in their defense they probably thought I was a bot) and it made me think twice about thanking people... (I still thank people when I win, but I rarely thank people for hosting giveaways anymore)

I don't give away games to get something in return, if that answers your question.
But you do you.

Shh, don't say the redacted.
Just mentioning redacted may increase the probability of being redacted ed.

I actually added first person to my backlist 2 days ago, so I am curious why people add other users to theirs.
It's up to you which people are "worth" adding there. For me, it's always nice to simply say "thank you" and I try to do it every time I win anything, big or small. But, as I said, you can add totally anyone to your blacklist, as well as your whitelist, only becasue you feel like doing it. I actually have a bunch of people on my whitelist, simply because either I've won something from them, or I just think they seem like a cool person :D At the other hand, I started filling mine blacklist basing on people forum activity. I was thinking of somhow adding "random" people based on their overall activity, like leveling up by adding sketchy giveaways or using scripts, but there are too many people doing it.

I will mention one thing that comes to mind. I'm the kind of person who is inclined to always say "thank you" for a charitable or kindhearted deed (such as these giveaways). What I discovered over my initial year or two here is that I was showing up on some folks blacklists specifically "because I said thank you" (me not noticing a request "not to" in the giveaway comments).

Now I try to be more careful to NOT say thank you in comments under a giveaway unless and until I have read the giver's comment at the top, because many folks don't want a thank you (though most if not all will allow it on a win, so I still say thanks on anything I win). At first it seemed like an odd idea to me that someone would be offended by a "thank you", but now I realize that they just prefer not to be bombarded by a ton of messages popping up.

That being said, I don't recall anyone ever saying "don't say thanks, even if you win".

But, if someone out there has been "burned" for saying thank you, they may think twice about saying it, not wanting to offend, and may not (in their own mind) have made a distinction between a "win comment" and a "pre-win comment".

Hope that helps you. 😎

I don't see any reason in blacklisting at all. The probability the person will ever won from you (again) is so small I'd never even bother.

I get so many thank bots on joining, that I don't need any on receiving. Marking it as received is thanks enough.

Really, less than 1% didn't say thanks? That's remarkably good stats. I haven't kept track of the exact numbers but I think one in every four giveaways I've made I got no message acknowledging the win, as in no thanks or confirmation of activation from the winner, just a silent green tick appearing in the received list.
And while it does feel nice to get that "thanks" message from the winner it's not like I'm gonna blacklist them over the lack of such message, feels like too small of a transgression, at least to me. I usually try to always remember to reply with a "you're welcome" to the winners that thank me to show that I appreciate the gesture, and of course I also try to always leave a "thanks" when I win any giveaway.

I'd write a sternly phrased letter to their parents

Lack of courtesy also stucks with me now, although I wasn't expecting any courtesy at first. I think people generally aren't voluntarily rude, therefore blacklisting doesn't sound like the valid answer.

I understand it can be really frustrating in some cases though. For example, I picked my first game to give away based on fun rather than contributor value, and the person didn't even acknowledge me after I messaged them on Discord and Steam to make the giveaway come to an end. When your level of effort doesn't match at all the response, it takes a toll on you.

It's nice to receive a thanks. It's even nicer if the winner actually plays their win within a few months. You can't really count on either though, and I'd rather occupy my time with other things personally. But, nobody should be telling you how to operate your account. You do what feels right for you.

Since it's limited, lack of courtesy or bad manners probably won't affect mine. I'm not saying it's a bad reason but there are reasons higher on my list.