How can you tell?

And Steam profile is private

Thanks, you saved me some points!

It's not allowed to accuse giveaways of being "fake". If creator does not deliver the game, they will lose slots and not be able to make more giveaways. That's why a limit for new users is in place.

Please refrain from doing so in the future.

To remain respectful to giveaway creators, do not write comments that question the legitimacy of their giveaways. For example, it would be inappropriate to comment that a giveaway is "fake" when you notice a new user has created a giveaway for a highly desirable game.

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No. This is evidence the requirements for creating an account on SG are inadequate.

It's not allowed to accuse giveaways of being "fake". If creator does not deliver the game, they will lose slots and not be able to make more giveaways. That's why a limit for new users is in place.

Please refrain from doing so in the future.

To remain respectful to giveaway creators, do not write comments that question the legitimacy of their giveaways. For example, it would be inappropriate to comment that a giveaway is "fake" when you notice a new user has created a giveaway for a highly desirable game.