WHERE TO DISCOVER MUSIC
Discogs' Explore
RateYourMusic / Sonemic
last.fm/music/Arist+Name/+similar
reddit.com/r/vintageobscura
Grove Music
The Wire [UK]
Folkways (Traditional Folk)
Internet Archive (The Great 78 Project: 1900s-1950s)
classicalarchives.com (Classical)
scaruffi.com (Rock)
Resident Advisor (Electronic Dance)
FACT Magazine (Electronic Dance)
Ishkur's Guide to Electronic Music (Electronic Dance)
www.hos.com (Ambient, New Age)
RYM Ultimate Box Set
Select RYM Users: herkyjerky, AntiWarhol (Traditional Folk), undead_warrior (Hardcore [EDM]), CircadianPolyrhythms
Personal Opinion: don't bother with Rolling Stone, Pitchfork or Fantano. While they all had their peak at their respective times, today they all lack the spirit of discovery they used to have and now they are only bothered by talking about what is already popular to get as many visitors as possible. Follow the alternatives instead, it should be a win-win situation.