Contestkings is a discord for people that host giveaways that follow the no upvote/ no resteem and no follow line of thinking. They are heavily invested in Splinterlands that's for sure but there's other aspect to CK other than Splinterlands.
But you're right, I absolutely should highlight them in a post sometime soon. Its an awesome group for anyone to join. Thanks for bringing them up have an !BEER :)