I was banned for asking people to post very small replies.
I'm not sure why exactly you got banned, but my guess is that you should be allowed to do that in the 'Games and rounds' board (which you did previously), based on theymos rules:
Most giveaway threads are no longer allowed in the Alternate cryptocurrencies sections. From now on, posting or replying to such threads could result in being banned. Existing threads will be locked.
Specifically, you are not allowed to give people any incentive to post insubstantial posts in your threads. You can't offer to pay people who post their addresses, usernames, etc. You can do giveaways off-site and link to the giveaway page in a thread, but you can't give people any bonus for replying to your thread.
Similar threads are already restricted to Games and Rounds in the non-altcoin sections, but the giveaway-related post volume is so high in the altcoin sections that I've decided to just ban them entirely here.
The underlined part appers to only affect altcoin-related giveaways on the Altcoin board, and you are in agreement with the bolded part. So where is the catch?
edit: Ehm... were you paying in BTC? I thought you were because of the first line "we will be offering 0.5 BTC", but I just noticed you also wrote this on the now-deleted thread: "You will need an ETH wallet to get the coins."
You can only giveaway real Bitcoins.