Are Guest pass allowed to be giveawayed?

i clicked report on the giveaway, so what happens?

Now that you've said that we'll have suicidal people doing it D:

what is this "terrible thing"

sure, although I'm not sure if that counts as calling out. might be better just to report the giveaway and leave it there.

No reason to put it here, if you reported it as you mentioned, then they will see it and it will be taken down. You can post giveaways in topics if they are public or group giveaways, but there is not much reason to post a giveaway that will most likely be taken down. Support will catch it, don't worry.