#calckey social appeals on many levels. Pleasant interface, excellent threading support, lively discussions.
What troubles me is the aggressive #defederation stance. Last Nov, mastodonapp.uk was blocked by several servers, due to moderation concerns. These were resolved and all the main blocking servers have re-federated. But calckey.social maintains its block.
Unless I want to be cut off from accounts on mainstream Mastodon instances, I can't make calkey.social my home.