Over the past two month I've Put together a list of all the Legally free metal albums.

So far I've compiled over 280 free releases from
24 Heavy / Power Metal bands
50 Speed / Thrash Metal bands
47 Death Metal bands
49 Doom / Stoner / Sludge Metal bands
54 Black Metal bands
10 "Core" bands
4 Compilations
and 4 sites that feature 11 or more releases for free.

I'm going to keep adding to the list till I can't find anymore free releases.

link:
http://metalinkusteel.blogspot.com/p/free-metal.html