They are supposed to be human curated, yes. The quality of the mixes definitely vary, but with a bit of time, it will be easy to separate the wheat from the cha

They are supposed to be human curated, yes. The quality of the mixes definitely vary, but with a bit of time, it will be easy to separate the wheat from the chaff. Mixcloud also has a labeling system, so it will understand things like "melodic house", even having charts for it if it's popular enough. Labels are also a good way to discover music, especially now, with the many specialized net-labels. If by any chance you like dark ambient too, Cryo Chamber on YouTube can be a good one. I find their mixes excellent as background music for reading, for example.