From what I understand, short interjections of appreciation are frowned upon. You can express the same feeling by favoriting the post and adding to it's score.
IMO, those are also bad conversation starters. It might be weird to come here for conversations, but I find it Danbooru is an interesting community to engage with.
Right. These are the two main reasons to rain downvotes upon yourself:
- Any short expression, meme or description of your inner fetishes that nobody asked, no one cares and you couldn't keep for yourself. - Asking "why you got downvoted?".
So, if you would like to post anything weird like "I want to sniff that fart so much" or "I wish I could lick that feet and stuff it into my mouth", you better think again.