You can create “non-guaranteed” giveaways with serial keys that have already been exposed or unveiled in your Indiegala Library, or that come from elsewhere.
A user that accepts to participate in a “non-guaranteed” giveaway assumes full responsibility, and is aware of the potential risk that the serial key provided might not be valid. In this case Indiegala can not offer support of any kind. However it is possible to isolate “unreliable users” and help the community with our feedback system. The feedback that you leave in case you win a non-guaranteed giveaway will affect accordingly the reputation of the creator of the giveaway, this way all users will be aware of his reputation.
It is therefore very important that after a non-guaranteed giveaway has ended you leave feedback, and that this feedback is honest.