Dogecoin brought me to Hive, but it was Hive which Hive kept me at Hive. What is Hive, and what did I find there?

It was Dogecoin which brought me to Hive, but it was Hive which kept me at Hive. What is Hive, and what did I find there? Cover image made using MS Paint. Hive logo comes from hive.io. When you come to