Yes, it should be like that, participants can contribute, not only to meet the payment requirements that they will receive when they are in a particular campaign, but they also provide something useful such as game information and so on.
But on the other hand, you can't blame something like this, because the person himself should know his position. Only playing a small part of what is obtained is also not a loss, especially if we really like to gamble and make gambling a place to have fun.
In which part I blame it? I said that it is just an unfortunate thing to happen in this forum and it is a hope to see most of them will be like Beparanf. No need to do exactly the same as what he did but at least do contribute to the casino they promote although with something like few percent of what they earn every week. I know it is not mandatory and people are free to do anything with what they earn but showing real contribution especially if there is competition/contest/or giveaway that is requiring them few dollars only will give much better outcome for both the casino and the participants.
Don't misunderstand what I said buddy, I'm not saying you blame and I'm not saying anyone blames, that's actually been conveyed in my sentence after.
The point is that there must be awareness from the person himself. I'm the same as you who see this as something that should be done, but whether they will do it or not, it depends on themselves. And perhaps the one who has more right to "ask" in a matter like this is the campaign organizer himself.