[have_faith]

Counter anecdote: I've built up playlists full of tracks from good recommendations from Spotify. The genres are relatively niche and electronic (sub-genres of house, techno, uk garage, electronica, etc). The only downside is it gets a bit too eager to recommend the most played few tracks from a given artist, but I've discovered a lot of new artists this way though.

[gcpwnd]

I remember that my suggestions were pretty obscure the last time I tried the spotify algo. But actually it is pretty natural that they suggest niche or less known artists because those have shittier deals and are less expensive to stream. Also, in that position you don't want to promote the top artists for free.