No, it promotes spam, it's detrimental to actual discussion, and brings nothing at all of value to the forum. It's never been allowed on the forum in general, they are restricted to games and rounds. Alt currencies was different because there was no games and rounds/giveaway forum. I've thought about this as well but didn't care enough to do anything about it, but since theymos did, I support it fully. Y'all need to stop spamming the forum before the whole alt currencies section gets deleted, it's getting to be more trouble than it's worth. I liked the alt currencies section once upon a time, but it's completely and utterly worthless at the moment because of all the spam.

TLDR If your announcement thread has a giveaway in it, it will be locked.